[GRASS5] XDRIVER and redraw - suggestion

[Markus Neteler]

Hi,

while on the one hand the redraw function of XDRIVER is nice,
it can become rather annoying with large maps (say, 500MB-1GB
remote sensing data).

What about following suggestion: the XDRIVER reads the environmental
variable
XDRIVER_MAX_NREDRAW
which defines the maximal number of maps kept in the monitor
list. If not defined, no limitation, if defined, the user
can specify the maximum numbers of maps to be redrawn. Inthis
case the XDRIVER forgets about the older drawn maps.

It would be nice to have this optional variable.

Markus