[GRASS5] [bug #3704] (grass) d.rast.arrow does not save a line in the monitor history

[Hamish]

I wrote:

> Another question:
> 
> Do the default fonts (romans et. al) have an arrow char built in?
> (distant memory that they did?) If so we could use it with
> R_text_rotation() to improve to a 360 degree resolution arrow drawing 
> for standard GRASS aspect maps and ANSWERS aspect maps instead of the
> current 8-way ones... maybe freetype same-char compatibility issues.

Probably better to just define an arrow in polar coordinates and vary
theta. Easy enough to drop a new fn into arrow.c to do this.



Hamish