Grass display modules converted to have a "device=" option. Use the 
R_open_driver2(driver_name) library function. With no option, the
current device is used, i.e. modules behave as usually.

------------------------------------------------------------------------------
MODULE			| Problems (bugs are unrelated to the "device" modif)
------------------------------------------------------------------------------
d.3d			: interractive program -> problems
d.area			:
d.ask 			: unfinished ($GISBASE/etc/i.ask ???)
d.barscale		: untested (I use lat-lon, d.bascale not...)
d.colormode		:
d.colortable		:
d.display		: no, interractive program -> problems (d3d...)
d.erase			:
d.font			:
d.frame			:
d.geodesic		:
d.graph			:
d.his			: needs update to 5.0 cell files
d.histogram		:
d.icons			: no icons, so no tests...
d.label			:
d.labels		: interractive program -> problems (d3d...)
d.leg.thin		: does it work wirg Grass 5.0?
d.legend		: idem d.leg.thin
d.mapgraph		:
d.measure		:
d.menu			:
d.paint.labels		: no label file, so no tests...
d.pan			:
d.param.scale		: some floating point exceptions!!!!
d.points		:
d.rast			:
d.profile		:
d.rast.arrow		: not tested
d.rast.edit		: some segfaults
d.rast.num		:
d.rast.zoom		: interractive program -> problems (d3d...)
d.rgb			: added some bugfixes...
d.rhumbline		:
d.save			: no
d.scale			: but doen't seem to work?
d.site.labels		: not tested
d.siter			: Is a tcl script: left untouched.
d.sites			:
d.sites.label		: untested
d.sites.qual		:
d.text			: changed the prompt EOF remplaced wuth [CTRL-D]
d.title			:
d.title			: WHY do we need to copy the output into d.text???
d.vect			:
d.vect.cats		:
d.vect.zoom		:
d.what.rast		:
d.what.sites		:
d.what.vect		:
d.zoom			:
------------------------------------------------------------------------------

These represent the whole content of the "display" directory, as found in 
Grass5.0beta7. Modules are successfully updated unless specified. Reported 
bugs ar not related to the update. The "device=.." option has the same syntax 
for every module, for instance: d.rast map=country device=x1.


Pierre de Mouveaux - 24 april 2000.
pmx@audiovu.com