[GRASS-dev] Linke turbidity in r.sun.daily

[Nikos Alexandris]

While working on the script, I'd like to understand if the "gisprompt" 
line is correct:

#%option
#% key: linke
#% key_desc: key description here
#% type: string
#% label: label here

#% gisprompt: old,fcell,raster

#% description: Name of the Linke atmospheric turbidity coefficient 
input raster map
#% required : no
#%end


According to 
<http://wgrass.media.osaka-cu.ac.jp/grassh/programming7/gislib_cmdline_parsing.html#gisprompt_Member>:
"...three comma-separated (no spaces allowed) sub-arguments..."  and  
"Second argument: ...should be the name of one of the standard 
subdirectories of the mapset, as listed in $GISBASE/etc/element_list."

Since Linke Turbidity ranges in [0, 7.0], "fcell" shoulb be correct 
here.  Also, does it matter if a map is DCELL or FCELL, regarding the 
"element"?  Either will be stored inside the "fcell" directory, right?

Nikos