[GRASSweb-list]bob: web/gdp/nviz bugs_todo.html,NONE,1.1 nviz_3dsetting.html,NONE,1.1 nviz_image.html,NONE,1.1 index.html,1.1,1.2 nviz_credit.html,1.1,1.2 nviz_desc.html,1.1,1.2 nviz_hints.html,1.1,1.2 nviz_panel_anim.html,1.1,1.2 nviz_panel_color.html,1.1

grass at intevation.de grass at intevation.de
Fri Mar 26 11:04:57 EST 2004


Author: bob

Update of /grassrepository/web/gdp/nviz
In directory doto:/tmp/cvs-serv31397

Modified Files:
	index.html nviz_credit.html nviz_desc.html nviz_hints.html 
	nviz_panel_anim.html nviz_panel_color.html 
	nviz_panel_cplane.html 
Added Files:
	bugs_todo.html nviz_3dsetting.html nviz_image.html 
Log Message:
New NVIZ Documentation

--- NEW FILE: bugs_todo.html ---
<html>

<head>
   <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
   <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
   <title>NVIZ - TODO and BUGS</title>
</head>
 
<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">

<h1><DEFANGED_IMG src="grass.smlogo.gif">NVIZ Reference Manual</h1>
<hr width="100%" align=center size=4 noshade>
<p>
<a href="nviz_toc.html">CONTENTS</a>
</p>

<h2>Bugs / Todo</h2>
<p>Updated January 8, 2004</p>

<pre>
1. Missing/not working which worked in SGI version
-------------------------------------------------

Scripting
2/2002 Scripting for dynamic surfaces needs more testing, 
but it seems to be working in principle.

Mask
12/2003 masked area is black instead of background color (now white) - bug?
  one needs to do DRAW twice for mask to take effect or its removal
  to take effect. Invert mask leads to "mask not set"
  when I put the same map as transparency - it worked as mask
  transparency does not have remove button, but setting a new constant to 0 works

Loading sites
12/2003 this needs to be tested
After hitting the maximum site files loaded, it correctly displays
an error but then hangs-on with "please wait" (probably trying
to load them - it should return back where it was
and not attempt to load)

Occasionally, mouse over slider is interpreted as a movement of slider causing
the fully rendered image going to the grid style mode
12/2003 I haven't observed it happening on with the current version yet

2. Things which were in SG3d but were never ported to nviz
----------------------------------------------------------

2.1 Legends, labels, including labels for sites
12/2003 included, but still needs some work

2.2 Scale, north
12/2003 included, still needs some work, x,y,z axes with tics would be useful for
creating images for publications

2.3 More options for display of sites based on their attributes
12/2003 work started but not there yet

2.4 Display of lat/long data on a sphere (globe) or its part

3. Experimental capabilities for combining volumes and surfaces in sg4d
----------------------------------------------------------------------

3.1 Integration of r3.showdspf with surface visualization
12/2003 ongoing development

4. Capabilities of nviz added to some older versions but not included in the release
---------------------------------------------------
4.1 Draw a flow line from a queried point

Testing interactive placement of flowlines...
position.c:#ifdef DO_TEST
panel_query.tcl:# DO_TEST
/GRASS.src/4.2/grp.contrib/oglnviz/scripts

5. Updated stuff from BUGS_TODO and new bugs/fixes needed
-----------------------------------------------------
12/2003 cutting planes give transparent crossection instead of greay for GR option
there are some more inconsistencies - it needs to be tested more.

12/2003 - the follwoing needs to be tested
  - The second issue is with the error you report above when entering a
    vertical exag. manually.  The error that you are getting is a TCL error.
    To try and get a decent vertical exaggeration you should try manually
    setting is as you were doing above above. Because you are dealing with
    such small numbers you may have to enter the value a couple of times
    before it is accepted. The reason for this is that TCL want to use a
    value that is a multiple of the scale-bar resolution.  The resolution
    should be reset to match the value you have entered -- it is this
    calculation that is generating the error (I think) that you describe
    above.

12/2003 - is this still true
  - nviz does not work well with latitude-longitude projections because it
    uses decimal degrees instead of metres for the resolution. Thus is why
    the vertical exaggeration is such a small number.

  - Z axis scalable when displaying 3D sites
    (Being worked on by ?)

  - eventually color problem in lat/long locations
    (Being worked on by ?)

12/2003 - see d.nviz - should be mentioned in tutorial
  - high resolution output (definable extent like CELL driver)
    (Being worked on by
     probably Bob Covill <bcovill at tekmap.ns.ca>)

?? Check out Nv_force_panel in nviz.in

6. Notes for interface - if changes are made tutorial needs to be updated too
------------------------------------------------------------------------------

6.1 Surface Panel
should we replace Surface style -> Draw style or Surface draw style
                  Grid style -> Interactive style

6.2 Surface - Position pannel
this is probably more complicated, but to make moving the surface around more natural
the cross in the positioning square should be aligned with the current view -
Follow viewpoint option?
Currently, depending from where you are looking at the surface, you need to move the cross
to the left if you want to move the surface to the right, same for north and south
Or, a simpler solution would be just put there N S E W as we have in lights
into the square

7. Wish list for future

7.1 Various types of lines (besides the line width and color), line labels



</pre>
</body>
</html>

--- NEW FILE: nviz_3dsetting.html ---
<html>

<head>
   <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
   <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
   <title>GRASS 5.0 Tutorial for nviz</title>
</head>
<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">

<h1><DEFANGED_IMG src="grass.smlogo.gif" alt="small GRASS logo" width="76" height="91">NVIZ Reference Manual</h1>
<hr width="100%" align=center size=4 noshade>
<p>
<a href="nviz_toc.html">CONTENTS</a>
</p>


<h2>3D Settings</h2>
<p>You can save or load a particular 3D view. <strong>NVIZ</strong> saves 3D view files in the <strong>GRASS</strong> <em>3d.view</em> directory. The 3D view files include the current view in real coordinates, lighting options, mesh resolution, and surface resolution. These files use the same format as the <strong>GRASS</strong> program <em><strong>d.3d</strong></em>.
</p> 

<DEFANGED_IMG src="nvimg/panel/file_menu.gif" alt="File Menu" width="302" height="323">

<h2>Load 3d Settings</h2>
<p>
Loads a previously saved 3D view. The <strong>Movement</strong> panel updates to the new view.
</p>

<h2>Save 3d Settings</h2>
<p>
Saves the current 3D view to a user defined file.
</p>

</body>
</html>
--- NEW FILE: nviz_image.html ---
<html>

<head>
   <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
   <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
   <title>GRASS 5.0 Tutorial for nviz</title>
</head>
<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">

<h1><DEFANGED_IMG src="grass.smlogo.gif">NVIZ Reference Manual</h1>
<hr width="100%" align=center size=4 noshade>
<p>
<a href="nviz_toc.html">CONTENTS</a>
</p>


<h2>Image Dump</h2>

<p>Image Dump saves the contents of the current <strong>NVIZ</strong> viewer to an image file. Make sure the <strong>NVIZ</strong> viewer is on top of all other windows in the current workspace. If any windows cover the <strong>NVIZ</strong> viewer, they appear as part of the saved image. With the exception of the <strong>Max. Resolution PPM</strong>, the image has the same dimensions as the <strong>NVIZ</strong> viewer.
</p> 

<DEFANGED_IMG src="nvimg/panel/image_dump.gif" alt="Image Dump" width="302" height="323">

<dl>
<dt><strong>IRIS RGB Image</strong></dt>
<dd>Saves the scene to an Iris RGB image file.
<br><br></dd>

<dt><strong>PPM Image</strong></dt>
<dd>Saves the scene to a PPM image file.
<br><br></dd>

<dt><strong>TIFF Image</strong></dt>
<dd>Saves the scene to a TIFF image file.
<br><br></dd>

<dt><strong>Save Max. Resolution PPM(s)</strong></dt>
<dd>Saves the scene to the highest resolution (size) supported by the users graphics setup. The oversized image renders as a series of tiles that are automatically assembled by the program <em><strong>pnmcat</strong></em>. If <em><strong>pnmcat</strong></em> is not available, you need to manually assemble the tiles with another graphics program. The aspect ratio of the oversized image matches the aspect ratio of the original <strong>NVIZ</strong> viewer.
<br><br></dd>
</dl>


</body>
</html>
Index: index.html
===================================================================
RCS file: /grassrepository/web/gdp/nviz/index.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- index.html	23 Jul 2002 08:44:18 -0000	1.1
+++ index.html	26 Mar 2004 16:04:55 -0000	1.2
@@ -1,61 +1,53 @@
-<title>
-nviz description
-</title>
-<h2>
-nviz - A GRASS Visualization Program 
-</h2>
-<p>
-<DEFANGED_IMG src="img/nv/inter1b.gif">
-<hr>
-<p>
-<strong>nviz</strong> is a GRASS module-in-progress which allows users
+<html>
+<head>
+   <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+   <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
+<title>nviz description</title>
+ </head>
+<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
+
+<h2>nviz - A GRASS Visualization Program</h2>
+
+<p><DEFANGED_IMG src="img/nv/inter1b.gif"><hr></p>
+
+<p><strong>nviz</strong> is a GRASS module-in-progress which allows users
 to realistically render multiple surfaces in a 3D space, optionally
 using thematic coloring, draping GRASS vector files over the surfaces, 
 and displaying GRASS site files either draped on the surfaces or 
-as 3D point locations.
-<p>
-We are currently in the process of rewriting the tcl/tk interface to make
+as 3D point locations.</p>
+
+<p>We are currently in the process of rewriting the tcl/tk interface to make
 it easier for programmers to add functionality, and porting the
-graphics from IRIS GL to OpenGL.
+graphics from IRIS GL to OpenGL.</p>
+
+
+<p><strong><a href="nviz_toc.html">Draft Tutorial</a></strong></p>
+
+<p><strong><a href="http://www2.gis.uiuc.edu:2280/modviz/viz97/brown/">Features - Slides from Visualization 97 Conference</a></strong></p>
 
-<p>
-<strong>
-<a href="nviz_tut.html">
-Draft Tutorial</a>
-</strong>
-<p>
-<strong>
-<a href="http://www2.gis.uiuc.edu:2280/modviz/viz97/brown/">
-Features - Slides from Visualization 97 Conference</a>
-</strong>
-<p>
 <hr>
-Maintained list of <a
-href=http://freegis.org/cgi-bin/viewcvs.cgi/~checkout~/grass/src.contrib/GMSL/NVIZ2.2/BUGS_TODO>BUGS in NVIZ</a> (we are working on these bugs).
+<p>Maintained list of <a href="http://freegis.org/cgi-bin/viewcvs.cgi/~checkout~/grass/src.contrib/gmsl/nviz2.2/bugs_todo">BUGS in NVIZ</a> (we are working on these bugs).</p>
+
 <hr>
-<strong>Animations.</strong>
-Since each surface often consists of hundreds of thousands of
-polygons, with render times of several seconds to a minute,
-we represent the surfaces with wire meshes as a rough
-approximation when a user is 
-<menu>
+<p><strong>Animations</strong>. Since each surface often consists of hundreds of thousands of
+polygons, with render times of several seconds to a minute, we represent the surfaces with wire meshes as a rough approximation when a user is</p> 
+
+<ul>
 <li><a href="http://www2.gis.uiuc.edu:2280/modviz/viz/movies/position.mpg">
-positioning the viewpoint (324 K)</a>,
+positioning the viewpoint (324 K)</a>,</li>
 <li><a href="http://www2.gis.uiuc.edu:2280/modviz/viz/movies/mvsurf.mpg">
-positioning the surfaces (152 K)</a> for a better view of data, or 
+positioning the surfaces (152 K)</a> for a better view of data, or </li>
 <li><a href="http://www2.gis.uiuc.edu:2280/modviz/viz/movies/cpwire.mpg">
 moving a cutting plane (220 K)</a>
-through the surfaces.  
+through the surfaces.</li>
 <li>By using scripts or keyframe animation,
-<a href="http://www2.gis.uiuc.edu:2280/modviz/viz/movies/hor_slice.mpg">fully rendered animations (125 K)</a> 
-are generated.
-</menu>
-<p>
+<a href="http://www2.gis.uiuc.edu:2280/modviz/viz/movies/hor_slice.mpg">fully rendered animations (125 K)</a> are generated.</li>
+</ul>
+
 <hr>
-<strong>Snapshots.</strong>
-These thumbnail images are links to full size screen dumps 
-showing some of the multiple surface features of nviz.
-<br>
+
+<p><strong>Snapshots</strong>. These thumbnail images are links to full size screen dumps 
+showing some of the multiple surface features of nviz.</p>
 
 <a href="img/nv/cplane.gif"> <DEFANGED_IMG src="img/nv/cplane_i.gif"></a>
 <a href="img/nv/inter1.gif"> <DEFANGED_IMG src="img/nv/inter1_i.gif"></a>
@@ -71,13 +63,15 @@
 <br>
 <a href="img/nv/sit3a.gif"> <DEFANGED_IMG src="img/nv/sit3a_i.gif"></a>
 <a href="img/nv/surf3a.gif"> <DEFANGED_IMG src="img/nv/surf3a_i.gif"></a>
-<a href="img/nv/transp2.gif"> <DEFANGED_IMG src="img/nv/transp2_i.gif" align=TOP></a>
+<a href="img/nv/transp2.gif"> <DEFANGED_IMG src="img/nv/transp2_i.gif" align=top></a>
 
 
-<HR>
+<hr>
 <a href="../index.html">Go back to GRASS Manual Pages</a>
 <hr>
-<A HREF="http://www2.gis.uiuc.edu:2280/modviz/" TARGET="_top">
-<DEFANGED_IMG hspace=5 align=left SRC="gmsmodviz.gif" ALT=GMSL_VIZ_ICON>
-GMSL Modeling &amp; Visualization Home Page</A>
+<a href="http://www2.gis.uiuc.edu:2280/modviz/" target="_top">
+<DEFANGED_IMG hspace=5 align=left src="gmsmodviz.gif" alt="gmsl_viz_icon">
+GMSL Modeling &amp; Visualization Home Page</a>
 
+</body>
+</html>

Index: nviz_credit.html
===================================================================
RCS file: /grassrepository/web/gdp/nviz/nviz_credit.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- nviz_credit.html	23 Jul 2002 08:44:18 -0000	1.1
+++ nviz_credit.html	26 Mar 2004 16:04:55 -0000	1.2
@@ -1,29 +1,35 @@
 <html>
+
 <head>
    <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
 <title>GRASS 5.0 Tutorial for nviz</title>
  </head>
+
 <body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
 
-<P>
-<A HREF="nviz_toc.html">INDEX</A>
-</P>
+<h1><DEFANGED_IMG src="grass.smlogo.gif">NVIZ Reference Manual</h1>
+<hr width="100%" align=center size=4 noshade>
+<p>
+<a href="nviz_toc.html">CONTENTS</a>
+</p>
 
-<h3>NVIZ - Credits</h3>
-</A> <P>
+<h2>Credits</h2>
 
-<em>nviz</em></strong> written by Bill Brown, Terry Baker, Mark
+<p><strong></strong> written by Bill Brown, Terry Baker, Mark
 Astley, and David Gerdes, U.S. Army Corps of Engineers Research
-Laboratories, Champaign, Illinois and UI GMS Laboratory, Urbana, IL.  <p>
+Laboratories, Champaign, Illinois and UI GMS Laboratory, Urbana, IL.
+</p>  
 
-This document written by Terry Baker, Spring 95, based on a document
-written by Bill Brown.  Updated by Mark Astley 7/11/95.  <P>
+<p>
+Original documentation written by Terry Baker (spring 1995), and updated by Mark Astley, based on a document written by Bill Brown.
+</p>
 
+<p>
+Program and documentation (2004) updates by Bob Covill, Tekmap Consulting. 
+</p>
 
-<A HREF="http://www2.gis.uiuc.edu:2280/modviz/" TARGET="_top">
-<DEFANGED_IMG hspace=5 align=left SRC="gmsmodviz.gif" ALT=GMSL_VIZ_ICON>
-GMSL Modeling &amp; Visualization Home Page</A>
 
-</BODY>
-</HTML>
\ No newline at end of file
+
+</body>
+</html>

Index: nviz_desc.html
===================================================================
RCS file: /grassrepository/web/gdp/nviz/nviz_desc.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- nviz_desc.html	23 Jul 2002 08:44:18 -0000	1.1
+++ nviz_desc.html	26 Mar 2004 16:04:55 -0000	1.2
@@ -1,50 +1,31 @@
 <html>
+
 <head>
    <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
-<title>GRASS 5.0 Tutorial for nviz</title>
- </head>
-<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
-
-<P>
-<A HREF="nviz_toc.html">INDEX</A>
-</P>
-
-<h3>NVIZ - Description</h3>
-</A> <P>
+<title>NVIZ Manual</title>
+</head>
 
+<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
 
-<em> nviz </em> is meant to be used as a tool for viewing data
-surfaces in three dimensions using <strong>GRASS</em></strong> on
-<em>Silicon Graphics IRIS</em></strong> computers.  It evolved from
-the earlier <strong>GRASS</em><strong> program
-<em>SG3d</em></strong>. Users familiar with <em>SG3d</em></strong>
-will find <em>nviz</em></strong> similar but with a slightly different
-interface and many added features. New features include the ability to
-visualize multiple raster, vector, and site files at one time, and the
-addition of volume data among others.  Hardware requirements are a
-Z-buffer and 24 bit graphics OR a 24 bit graphic emulator, such as
-that on the <em>IRIS Indigo</em></strong>.  <p>
+<h1><DEFANGED_IMG src="grass.smlogo.gif">NVIZ Reference Manual</h1>
+<hr width="100%" align=center size=4 noshade>
+<p>
+<a href="nviz_toc.html">CONTENTS</a>
+</p>
 
-<em>nviz</em></strong> uses raster files as "elevation" and also as
-attributes of the surfaces (such as color, transparency, etc.).  While
-a true elevation data file used as elevation will produce the most
-realistic surfaces, users are encouraged to be creative in selecting
-other types of data to be represented by the vertical dimension.  Most
-continuous (as opposed to discrete) data types will result in a
-visualization that makes sense.  While developing the program, we used
-chemical concentrations as the elevation file with good visual
-results. <p>
+<h2>Description</h2>
+<p><strong>NVIZ</strong> is a <strong>GRASS</strong> tool used for viewing data
+surfaces in three dimensions. It evolved from the earlier <strong>GRASS</strong> program <em>SG3d</em>.
+</p> 
 
-Emphasis during development was on ease and speed of viewer
-positioning and flexibility for using a wide range of data values and
-sizes.  Since a wire grid can be drawn very quickly, such a grid is
-used to provide real-time viewer positioning capabilities.  Similarly,
-a lighting "model" provides real-time feedback as the user adjusts
-lighting.  Grid and polygon resolution control allows the user to
+<p>Developers emphasized on the ease and speed of viewer
+positioning and provided flexibility for using a wide range of data.  A low resolution surface or wire grid (optional) provides real-time viewer positioning capabilities.  Similarly,
+a lighting &#034;model&#034; provides real-time feedback as the user adjusts
+lighting.  Grid and polygon resolution controls allow the user to
 further refine drawing speed and detail as needed.  Continuous scaling
-of elevation values from 1.0ee-7 to 1.0ee+7 provides the ability to
-use various data types for the vertical dimension. <p>
+of elevation provides the ability to
+use various data types for the vertical dimension.</p> 
 
-</BODY>
-</HTML>
\ No newline at end of file
+</body>
+</html>
\ No newline at end of file

Index: nviz_hints.html
===================================================================
RCS file: /grassrepository/web/gdp/nviz/nviz_hints.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- nviz_hints.html	23 Jul 2002 08:44:18 -0000	1.1
+++ nviz_hints.html	26 Mar 2004 16:04:55 -0000	1.2
@@ -1,189 +1,155 @@
 <html>
+
 <head>
    <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
-<title>GRASS 5.0 Tutorial for nviz</title>
- </head>
+   <title>GRASS 5.0 Tutorial for nviz</title>
+</head>
+
 <body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
 
-<P>
-<A HREF="nviz_toc.html">INDEX</A>
-</P>
+<p><a href="nviz_toc.html">INDEX</a></p>
 
 <h2>NVIZ - Hints</h2>
-</A> <P>
-
-<H3>General</H3> <P>
-
-One nifty trick for navigating around Nviz is the "paste" feature
-supported in Tcl/Tk menus.  Any pulldown menu may be pasted
-permanently on the screen by selecting the menu using the middle mouse
-button (as opposed to the first mouse button).  The user may then
-click and drag the menu to another location on the screen.  The menu
-will remain in its new position, regardless of the selections made
-from it, until the menu item which created the pulldown is selected
-using the first mouse button.  For example, you can keep the "Panel"
-menu up for the duration of an Nviz session by selecting "Panel" from
-the main menu using the middle mouse button.  Selecting "Panel" with
-the first mouse button moves the pasted menu back to its normal
-position and removes the menu after a selection has been made.
-<P>
-
-<h3> Lighting </h3><p>
-
-Lighting greatly enhances the level of detail that can be seen in the
-surface.  For good lighting effects, position the light so that it
-creates a tilted half-moon on the sphere.  Usually placing the light
-in the N-W corner when viewing from the south works well because of
-the way humans tend to interpret shading.  To reveal very subtle
-gradual elevation changes, experiment with light placement and surface
-reflectivity.  Keep resolution higher (3 or 4) while adjusting viewing
-position and lighting so that drawing time is fast.  Then lower
-polygon resolution to 1 or 2 for the final rendering of the surface.
-<p>
 
-When rendering frames for animation, it is usually better to position
-lights so that they do not move with the viewer position (toggle
-<em>Follow Viewpoint</em></strong> OFF).  <p>
+<h3>Animation</h3>
 
-<h3> <A NAME="Hanim">Animation</A> </h3><p>
+<p><strong>NOTE:</strong> This page is still under construction. Future additions will include: Keyframe animation, off-screen rendering, how to assemble an animation, tips on NVIZ sliders, NVIZ environment variables, etc.
+</p>
 
-What follows is an example of creating an animation to help you get
-started.  <p>
+<p>This examples shows you how to create an animation.</p>  
 
-<h4> Key frames </h4><p>
+<h4> Key frames </h4>
 
-Using key frames is one of the easiest methods of animation it just
-takes some getting use to the <em>Key Frame</em></strong> slider.  For
+<p>Using key frames is one of the easiest methods of animation it just
+takes some getting use to the <strong>Key Frame</strong> slider.  For
 practice, just try making a circular path while always looking at the
-center of the data: <p>
-
-<OL> 
-
-<LI> use <em>look here</em></strong> to mark a fixed center of view in
-the middle of the surface. <p>
-
+center of the data:</p> 
 
-<LI> move the puck in the <em>XY position</em></strong> box to the
-southeast corner, adjust <em>Height</em></strong> and
-<em>Perspective</em></strong> until the data surface fills your
-graphics window.  <p>
+<ol>
+ 
+<li>Select <strong>look here</strong> to mark a fixed center of view in
+the middle of the surface.</li> 
 
+<li>Move the puck in the <strong>XY position</strong> box to the
+southeast corner, adjust <strong>Height</strong> and
+<strong>Perspective</strong> until the data surface fills the <strong>NVIZ</strong> viewer.</li> 
 
-<LI> pop up the <strong>Keyframe</em></strong> panel.  <p>
+<li>Select the <strong>Keyframe</strong> panel.</li>
 
-<LI> Click on <em>add a key frame</em></strong>.  <p>
+<li>Click <strong>add a key frame</strong>.</li>
 
-<LI> position the <em>Key Frame</em></strong> slider bar to the next
+<li>Position the <strong>Key Frame</strong> slider bar to the next
 place to add a key frame by clicking a half inch or so farther along
-the slider.  <p>
+the slider.</li>
 
-<LI> move the <em>XY position</em></strong> puck to the northeast
-corner.  <p>
+<li>Move the <strong>XY position</strong> puck to the northeast
+corner.</li>  
 
-<LI> Click on <em>add a key frame</em></strong> and repeat step 5.  <p>
+<li>Click <strong>add a key frame</strong> and repeat step 5.</li>  
 
-<LI> move the <em>XY position</em></strong> puck to the northwest
-corner.  <p>
+<li>Move the <strong>XY position</strong> puck to the northwest
+corner.</li> 
 
+<li>Click <strong>add a key frame</strong>.</li>
 
-<LI> Click on <em>add a key frame</em></strong>.  <p>
+</ol>
 
-You should now have enough key frames marked to define a path, so try
-clicking on <em>show path</em></strong> and then <em>run</em></strong>
-(NOT <em>run and save images</em></strong>).  If nothing happens,
-clear all key frames and go back to step 1.  Now let's complete the
-circular path: <p>
+<p>You should now have enough key frames marked to define a path. Click <strong>show path</strong> and then <strong>run</strong>(NOT <strong>run and save images</strong>).  If nothing happens,
+clear all key frames and go back to step 1.</p>  
 
-<LI> repeat step 5.  <p>
+<p>Now let's complete the circular path:</p>
 
-<LI> move the <em>XY position</em></strong> puck to the southwest
-corner.  <p>
+<ol>
+<li>Repeat step 5.</li>
 
-<LI> Click on <em>add a key frame</em></strong>.  <p>
+<li>Move the <strong>XY position</strong> puck to the southwest
+corner.</li>
 
-<LI> Now to close the loop, move the <em>Key Frames</em></strong>
-slider down to frame 1, so that the first frame is displayed, release
+<li>Click <strong>add a key frame</strong>.</li> 
+
+<li>To close the loop, move the <strong>Key Frames</strong>
+slider down to frame 1, so the first frame displays, release
 the mouse button, then click once on the slider in the empty part,
-past the last key frame, and click on <em>add a key frame</em></strong>.
+past the last key frame, and click <strong>add a key frame</strong>.
 This essentially copies the first key frame to the fifth &amp; last
-key frame.  <p>
+key frame.</li>  
 
-</OL>
+</ol>
 
-Now click on <em>run</em></strong>.  When the animation stops, adjust
+<p>Now click <strong>run</strong>.  When the animation stops, adjust
 the spline tension or use linear interpolation, change the number of
-total frames, and run again.  If you wanted to render the animated
-frames to .rgb files, you would now toggle <em>show path</em></strong>
-OFF and click on <em>run and save images</em></strong>, but why not
+total frames, and run again.  If you want to render the animated
+frames to .rgb files, you would now toggle <strong>show path</strong>
+OFF and click <strong>run and save images</strong>, but why not
 wait until you get a little more creative - image files use a lot of
-disk space.  <p>
+disk space.</p>
 
-<strong>Changing key frames:</em></strong> With the above key frames
-loaded, try changing a key frame as follows: <p>
+<h4>Changing key frames</h4>
+<p>With the above key frames loaded, try changing a key frame as follows:</p> 
 
-<OL>
+<ol>
 
-<LI> Position the <em>Key Frames</em></strong> slider so that it
-aligns with the arrow marking the second key frame.  <p>
+<li>Position the <strong>Key Frames</strong> slider so that it
+aligns with the arrow marking the second key frame.</li>
 
-<LI> Using the <em>Height</em></strong> adjustment in the
-<strong>Movement</em></strong> panel, raise your viewing position.
-Notice that if you have <em>show path</em></strong> toggled ON, you
+<li>Using the <strong>Height</strong> adjustment in the
+<strong>Movement</strong> panel, raise your viewing position.
+Notice that if you have <strong>show path</strong> toggled ON, you
 can see how your viewing position changes relative to the defined path
 by watching the south or east path views.  The small red dot
-represents your current position.  <p>
+represents your current position.</li> 
 
-<LI> Click on <em>add a key frame</em></strong>.  You will be asked in
-dialog box if you want to replace the old key frame:click <em>ok
-</em></strong>.  <p>
+<li>Click <strong>add a key frame</strong>.  You will be asked in
+dialog box if you want to replace the old key frame:click <strong>ok
+</strong>.</li>
 
-<LI> Run the animation again to see how the path has changed.  <p>
+<li>Run the animation again to see how the path changed.</li>
 
-<LI> Delete the middle key frame: grab its arrow marker (using your
+<li>Delete the middle key frame: grab its arrow marker (using your
 left mouse button), drag the marker completely off the slider to the
 garbage can icon at right, and release the mouse button.  A dialog box
-will ask if you really want to delete. Click <em>ok
-</em></strong>. Run again to see how path has changed.  <p>
+will ask if you really want to delete. Click <strong><em>ok
+</em></strong>. Run again to see how path has changed.</li>
 
-<LI> Set total frames to about 50, then one at a time, grab the center
+<li>Set total frames to about 50, then one at a time, grab the center
 key frame markers and slide them toward the right so that they are
-spaced something like: <p>
+spaced something like:<br>
 
-<PRE>
+<pre>
 1........2..3..4  
-</PRE><p>
+</pre>
 
-Run again, notice how movement speed was affected. <P>
+<p>Run again, notice how movement speed was affected.</p></li>
 
-<LI> Reverse the direction of travel by swapping the positions of the
-two interior key frame markers.  <p>
+<li>Reverse the direction of travel by swapping the positions of the
+two interior key frame markers.</li>
 
-</OL>
+</ol>
 
-Parameters stored in the key frame path include viewing position and
+<p>Parameters stored in the key frame path include viewing position and
 looking direction.  The looking direction will be overridden though,
-when the path is running, if <em>look here</em></strong> is active.
-To see this effect with the above path loaded, select <em>look
-here</em></strong> and click on a corner of the data, setting a new
-fixed center of view.  Now run the path again.  Click on <em>look
-cancel</em></strong> and run again. 
-<A HREF="http://www2.gis.uiuc.edu:2280/modviz/viz/movies/flight.mpg">This</A>
-is an example animation created in this way.  <p>
+when the path is running, if <strong>look here</strong> is active.
+To see this effect with the above path loaded, select <strong>look
+here</strong> and click on a corner of the data, setting a new
+fixed center of view.  Now run the path again.  Click on <strong>look
+cancel</strong> and run again. 
+<a href="http://www2.gis.uiuc.edu:2280/modviz/viz/movies/flight.mpg">This</a>
+is an example animation created in this way.</p>
 
-<h4> <strong> Image File Management </em></strong> </h4><p>
+<h4>Image File Management</h4>
 
-Because .rgb image files can end up taking a lot of disk space, users
+<p>Because .rgb image files can end up taking a lot of disk space, users
 should be mindful of disk storage capacity when attempting to create
 an animation.  Keeping animation files and image dumps in directories
 dedicated for such files helps in management.  A single rgb image
 usually takes between 200K to 3M bytes of storage, depending upon size
-and complexity.  If you use the SGI <em>movie</em></strong> program to
+and complexity.  If you use the SGI <strong><em>movie</em></strong> program to
 replay animations, each frame of the animation must have been saved to
 files of identical dimensions; so especially if you are creating an
 animation piecewise, at different sessions, it becomes important to
 maintain a consistent size for the graphics window.  With the
-<em>movie</em></strong> program and with other screen dump animating
+<strong><em>movie</em></strong> program and with other screen dump animating
 programs, there is a zoom option to enlarge the animation images at
 time of playback.  So if you want the animation to fill your screen,
 you could set the width and height of the graphics window to half or a
@@ -191,16 +157,16 @@
 zoom option (this will cause a loss of resolution though, since the
 zoom just replicates pixels).  If you are making an animation to be
 recorded onto video tape, it may be necessary to set the width and
-height to specific dimensions.  <p>
+height to specific dimensions.</p>
 
-New SGI programs released with IRIX 4.0.5,
-<em>moviemaker</em></strong> and <em>movieplayer</em></strong>, are
-also very useful for animations. <em>Moviemaker</em></strong> allows
+<p>New SGI programs released with IRIX 4.0.5,
+<strong><em>moviemaker</em></strong> and <strong><em>movieplayer</em></strong>, are
+also very useful for animations. <strong><em>Moviemaker</em></strong> allows
 you to create movie files from any number of rgb files at various
-frame rates.  With <em>movieplayer</em></strong>, much longer
-animations may be replayed than with <em>movie</em></strong> since the
+frame rates.  With <strong><em>movieplayer</em></strong>, much longer
+animations may be replayed than with <strong><em>movie</em></strong> since the
 frames are read directly from disk at run time rather than having to
-be loaded into memory.  <p>
+be loaded into memory.</p>
 
-</BODY>
-</HTML>
\ No newline at end of file
+</body>
+</html>
\ No newline at end of file

Index: nviz_panel_anim.html
===================================================================
RCS file: /grassrepository/web/gdp/nviz/nviz_panel_anim.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- nviz_panel_anim.html	23 Jul 2002 08:44:18 -0000	1.1
+++ nviz_panel_anim.html	26 Mar 2004 16:04:55 -0000	1.2
@@ -1,86 +1,107 @@
 <html>
+
 <head>
    <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
-<title>GRASS 5.0 Tutorial for nviz</title>
- </head>
+   <title>GRASS 5.0 Tutorial for nviz</title>
+</head>
+
 <body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
 
-<P>
-<A HREF="nviz_toc.html">INDEX</A>
-</P>
+<h1><DEFANGED_IMG src="grass.smlogo.gif">NVIZ Reference Manual</h1>
+<hr width="100%" align=center size=4 noshade>
+<p>
+<a href="nviz_toc.html">CONTENTS</a>
+</p>
 
-<h3>NVIZ - Basic Animation</h3>
-</A> <P>
+<h2>Animation Panel</h2>
 
-Use the <A HREF="#AnimP">Animation</A> panel to create simple fly-bys
-of surfaces.  <P>
 
-<h3>
-<DEFANGED_IMG SRC="nvimg/panel/anim.gif"> <A NAME="AnimP">Animation Panel</A>
-</h3>  <P>
+<p>Using the <strong>Animation</strong> panel, you can create a simple fly-through animation.</p>
 
-<strong>step, run, Key Frames:</em></strong> The
-<em>Frames</em></strong> slider may be thought of as a time line
-representing the path.  When a path has been loaded, clicking on
-<em>run</em></strong> will move the viewer down the path, redrawing
-the wire frame surface at each path step.  The user may cancel a
-running animation at any time by clicking on the
-<em>stop</em></strong> button.  The <em>Key Frames</em></strong>
-slider shows the progression of the animation.  Use the
-<em>step</em></strong> arrows to step forward or backward one frame at
-a time, or move the <em>Key Frames</em></strong> slider to the desired
-point in the animation.  The number to the right of the
-<em>step</em></strong> arrows is the frame number being displayed. <p>
+<DEFANGED_IMG src="nvimg/panel/anim.gif" alt="Animation Panel" width="308" height="298">
 
-<strong>total frames:</em></strong> The value in this type-in box is
-the total number of frames in the animation.  When a vector file is
-first loaded, the number of points in the file (up to 1000) will be
-the number of frames.  Typically, to produce smooth animations, the
-user should use a vector file with 10 - 50 points, then change total
-frames to 100 or more, depending on the length of the animation
-desired. Requesting an excessive number of frames (i.e., 500,000) may
-cause memory problems.  <p>
+<h3>OPTIONS</h3>
 
-<strong>show path:</em></strong> Toggling this button ON will cause
-the path to be drawn each time a new frame is drawn.  The color and
-thickness of the path line may be changed using adjustments on the
-<strong>Vectors</em></strong> pop up panel.  Showing the path can be
-useful while previewing and adjusting the path.  <p>
+<dl>
 
-<strong>show vect:</em></strong> Toggling this button ON will cause
-vectors to be drawn each time a new frame is drawn, if a vector file
-has been loaded. (see also <em>Vect...</em></strong>).  <p>
+<dt><DEFANGED_IMG src="nvimg/panel/anim1.gif" alt="Step Back" width="16" height="16"> (Reverse)</dt>
+<dd>Moves backward through the animation one frame at a time. 
+<br><br></dd>
 
-<strong>spline, linear, tension:</em></strong> These controls affect
-the interpolation method used when the value of <em>total
-frames</em></strong> is different than the number of points in the
-original vector file used as the path.  The points from the vector
-file are always used as control points from which the positioning
-information for the total number of requested frames is derived.  If
-<em>spline</em></strong> interpolation is selected, the user may
-adjust spline tension (how much slack there is in the path) using the
-<em>tension</em></strong> slider.  Toggling <em>show
-path</em></strong> ON prior to adjusting tension allows the user to
-judge how much tension to use for a smoother path.  <p>
+<dt><DEFANGED_IMG src="nvimg/panel/anim5.gif" alt="Stop" width="16" height="16"> (Stop)</dt>
+<dd>Stops the animation. 
+<br><br></dd>
 
-<A NAME="Rsavev"></A> <strong>run and save images:</em></strong>
-Prompts user in the <strong>GRASS</em></strong> window for a prefix to
-be used to name a series of rgb format image files, one for each
-frame.  The animation is then run from the beginning, with each frame
-being fully rendered using the current display type and resolution
-(see <strong><A HREF="#Ctrlp">Control</A></em></strong> panel).  If
-<em>show vect</em></strong> is toggled ON, the vector file is also
-drawn, then the finished frame is written to an rgb file. If files
-already exist with the same name, they are overwritten.  You may
-cancel <em>run and save images</em></strong> at any time by selecting
-<em>stop</em></strong> This entire process may take several hours of
-computer time for a 100 frame animation of a complex surface, but
-requires no further intervention from the user.  The finished rendered
-animation files can be played back using SGI's <em>movie</em></strong>
-program if it is a very short animation or you can capture the images
-on video (Also see <em><A HREF="#Idump">Img Dump</A></em></strong>).
+<dt><DEFANGED_IMG src="nvimg/panel/anim3.gif" alt="Step Forward" width="16" height="16"> (Forward)</dt>
+<dd>Moves forward through the animation one frame at a time.
+<br><br></dd>
 
-</BODY>
-</HTML>
-<p>
\ No newline at end of file
+<dt><DEFANGED_IMG src="nvimg/panel/anim4.gif" alt="Play" width="16" height="16"> (Play)</dt>
+<dd>Plays the animation.
+<br><br></dd>
+
+<dt> <strong>Tot. Frames</strong></dt>
+<dd>Sets the total number of frames in the animation. 
+<br><br></dd>
+
+<dt> <strong>Key Frames</strong></dt>
+<dd>On the <strong>Animation</strong> panel, use the <strong>Key Frames</strong> slider to display and select key frame positions. Each vertical black line represents a frame in the animation. A thick vertical blue line marks the current position (frame) in the animation. An inverted blue triangle marks each key frame above the frame markers. Click at any point in the frame markers (black lines) to move the current position. Click and drag the key frame markers (blue triangle) to a new position.
+<br><br></dd>
+
+<dt> <strong>Add</strong></dt>
+<dd>Adds a key frame at the current position (frame number) marked by the thick vertical blue line. 
+<br><br></dd>
+
+<dt> <strong>Clear All</strong></dt>
+<dd>Deletes all key frames. 
+<br><br></dd>
+
+<dt> <strong>Show</strong></dt>
+<dd>Use the next three options to annotate the animation.
+<br><br></dd>
+<dd>
+	<dl>
+	<dt> <strong>Path</strong></dt>
+	<dd>Shows the path that the animation follows between key frames (if selected). This is useful for adjusting the tension if using a spline interpolation.
+	<br><br></dd>
+	<dt> <strong>Vect</strong></dt>
+	<dd>Draws all loaded vector files in the animation (if selected).
+	<br><br></dd>
+	<dt> <strong>Sites</strong></dt>
+	<dd>Draws all loaded sites files in the animation (if selected).
+	<br><br></dd>
+	</dl>
+</dd>
+
+<dt> <strong>Interp.</strong></dt>
+<dd>Sets the interpolation used between key frames. 
+<br><br></dd>
+
+
+<dd>
+	<dl>
+	<dt> <strong>Linear</strong></dt>
+	<dd>Uses a linear interpolation between key frames.
+	<br><br></dd>
+	<dt> <strong>Spline</strong></dt>
+	<dd>Uses a spline interpolation between key frames at the selected tension.
+	<br><br></dd>
+	<dt> <strong>Tension</strong></dt>
+	<dd>Sets the tension of the spline interpolation.
+	<br><br></dd>
+	</dl>
+</dd>
+
+<dt> <strong>Run and Save</strong></dt>
+<dd>Runs the animation and saves each frame as an image. You must supply a file name prefix, and set the image and draw type. The image file name includes the file prefix, frame number and image type. For example, frame number 12 with a file prefix of FLY saved as a PPM would be named FLY0012.ppm. 
+<br><br></dd>
+
+<dt><strong>Close</strong></dt>
+<dd>Closes the <strong>Animation</strong> panel.<br><br></dd>
+
+</dl>
+
+
+</body>
+</html>

Index: nviz_panel_color.html
===================================================================
RCS file: /grassrepository/web/gdp/nviz/nviz_panel_color.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- nviz_panel_color.html	23 Jul 2002 08:44:18 -0000	1.1
+++ nviz_panel_color.html	26 Mar 2004 16:04:55 -0000	1.2
@@ -1,28 +1,39 @@
 <html>
+
 <head>
    <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
-<title>GRASS 5.0 Tutorial for nviz</title>
- </head>
+   <title>GRASS 5.0 Tutorial for nviz</title>
+</head>
+
 <body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
 
-<P>
-<A HREF="nviz_toc.html">INDEX</A>
-</P>
+<h1><DEFANGED_IMG src="grass.smlogo.gif">NVIZ Reference Manual</h1>
+<hr width="100%" align=center size=4 noshade>
+<p>
+<a href="nviz_toc.html">CONTENTS</a>
+</p>
 
-<h3>NVIZ - Background Color</h3>
-</A> <P>
+<h2>Color Panel</h2>
 
-Use the <A HREF="#ColorP">Color</A> panel to set the background color
-on the display screen.  <P>
+<p>The <strong>Color</strong> panel sets the background color
+of the <strong>NVIZ</strong> viewer.</p> 
 
-<h3>
-<DEFANGED_IMG SRC="nvimg/panel/color.gif"> <A NAME="ColorP">Color Panel</A>
-</h3>  <P>
+<DEFANGED_IMG src="nvimg/panel/color.gif" alt="Color Panel" width="292" height="106">
 
-<strong>Background:</em></strong> Use a <em>Select Color
-</em></strong>popup (see below) to select color used to for background
-color. Button color is currently selected background color.  <p>
+<h3>OPTIONS</h3>
 
-</BODY>
-</HTML>
\ No newline at end of file
+<dl>
+<dt> <strong>Background</strong></dt>
+<dd>Sets the background color of the <strong>NVIZ</strong> viewer. The default color is white.
+<br><br></dd>
+
+<dt> <strong>Close</strong></dt>
+<dd>Closes the <strong>Color</strong> panel.
+<br><br></dd>
+
+</dl>
+
+
+</body>
+</html>
\ No newline at end of file

Index: nviz_panel_cplane.html
===================================================================
RCS file: /grassrepository/web/gdp/nviz/nviz_panel_cplane.html,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- nviz_panel_cplane.html	23 Jul 2002 08:44:18 -0000	1.1
+++ nviz_panel_cplane.html	26 Mar 2004 16:04:55 -0000	1.2
@@ -1,62 +1,89 @@
 <html>
+
 <head>
    <DEFANGED_meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <DEFANGED_meta name="GENERATOR" content="Mozilla/4.76 [de] (X11; U; Linux 2.2.16 i686) [Netscape]">
-<title>GRASS 5.0 Tutorial for nviz</title>
- </head>
-<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
+   <title>GRASS 5.0 Tutorial for nviz</title>
+</head>
 
-<P>
-<A HREF="nviz_toc.html">INDEX</A>
-</P>
+<body bgcolor="#FFFFFF" link="#0000DF" vlink="#006000">
 
-<h3>NVIZ - Cutting Planes</h3>
-</A> <P>
+<h1><DEFANGED_IMG src="grass.smlogo.gif">NVIZ Reference Manual</h1>
+<hr width="100%" align=center size=4 noshade>
+<p>
+<a href="nviz_toc.html">CONTENTS</a>
+</p>
 
-Use the <A HREF="#CutP">Cutting Planes</A> panel to
-manage cutting planes which may be positioned to slice through surfaces.
+<h2>Cutting Planes Panel</h2>
 
-<h3>
-<DEFANGED_IMG SRC="nvimg/panel/cut.gif"> <A NAME="CutP">Cutting Planes Panel</A>
-</h3>  <P>
+<p>The <strong>Cutting Planes</strong> panel controls the cutting planes (slices) between two or more surfaces. 
+</p>
 
-<strong>Current:</em></strong> Number of currently active cutting
-plane.  <p>
+<DEFANGED_IMG src="nvimg/panel/cut.gif" alt="Cutting Plane Panel" width="292" height="186">
 
-Clicking on name pops up a menu from which a new current plane may be
-selected.  <p>
+<h3>OPTIONS</h3>
 
-<strong>X, Y, Z:</em></strong> Position of current cutting plane
-(offset from center). Plane may be moved with position box and height
-slider immediately above.  Height (Z value) is only applicable if tilt
-is non-zero.  <p>
+<dl>
+<dt> <strong>Current</strong></dt>
+<dd>Shows the name(s) of the available cutting planes. Use this menu to select a new current cutting plane.
+<br><br></dd>
 
-Radio buttons <strong>T, B, BL, GR, N</em></strong> control color of
-visible plane between two or more surfaces.  <p>
+<dt> <strong>Z</strong></dt>
+<dd>Adjusts the elevation of the current cutting plane. 
+This option has no effect unless cutting plane tilt is non-zero.
+<br><br></dd>
 
-<strong> T:</em></strong> Color is the same as the color of top
-surface.  <p>
+<dt> <strong>XY</strong></dt>
+<dd>Sets the position of the current cutting plane. You can click and drag the cross hair or manually enter coordinates to set the XY position.
+<br><br></dd>
+</dl>
+<p>Five color options are available.
+<p>
 
-<strong> B:</em></strong> Color is the same as the color of the bottom
-surface.  <p>
+<dl>
+<dd>
+	<dl>
+	<dt><strong>T</strong></dt>
+	<dd>Sets the cutting plane color to the top surface color.
+	<br><br></dd>
+	<dt><strong>B</strong></dt>
+	<dd>Sets the cutting plane color to the bottom surface color.
+	<br><br></dd>
+	<dt><strong>BL</strong></dt>
+	<dd>Blends a cutting plane color using the top and bottom surfaces colors.
+	<br><br></dd>
+	<dt><strong>GR</strong></dt>
+	<dd>Sets the cutting plane color to grey.
+	<br><br></dd>
+	<dt><strong>N</strong></dt>
+	<dd>Uses no color. The cutting plane is transparent.
+	<br><br></dd>
+	</dl>
+<br><br></dd>
 
-<strong> BL:</em></strong> Color is blended from top &amp; bottom surface
-colors.  <p>
+<dt> <strong>Rotate</strong></dt>
+<dd>Rotates the current cutting plane about the North/South axis (side
+to side).
+<br><br></dd>
 
-<strong> GR:</em></strong> Color is grey.  <p>
+<dt> <strong>Tilt</strong></dt>
+<dd>Rotates the current cutting plane about the East/West axis (front to back).
+<br><br></dd>
 
-<strong> N:</em></strong> Plane is not visible.  <p>
+<dt> <strong>Reset</strong></dt>
+<dd>Resets the cutting plane(s) to default values.
+<br><br></dd>
 
-<strong>Reset:</em></strong> Resets to default values.  <p>
+<dt> <strong>All Off</strong></dt>
+<dd>Turns off all active cutting planes.
+<br><br></dd>
 
-<strong>All Off:</em></strong> Turns off all cutting planes.  <p>
+<dt> <strong>Close</strong></dt>
+<dd>Closes the <strong>Cutting Planes</strong> panel.
+<br><br></dd>
 
-<strong>Rotate:</em></strong> Rotate around center North-South axis.  (side
-to side) <p>
+</dl>
 
-<strong>Tilt:</em></strong> Rotate around axis in plane parallel to xy
-plane (front to back). If tilt is nonzero, plane surface is not
-visible.  <p>
 
-</BODY>
-</HTML>
\ No newline at end of file
+</body>
+</html>
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