Should DEVICE list in print() help be dependent upon graphics toolkit gnuplot/fltk/qt?

[Daniel J Sebald]

If one displays the "help print", he or she will find a list of devices 
that is outdated.  In the case of gnuplot, a couple devices are missing 
from the list.  In the case of fltk/qt many of those devices aren't 
valid.  Should an accurate list be generated somehow?  For example, in 
"help print" we could refer to graphics_toolkit and add an option to 
graphics_toolkit, e.g.,

> > graphics_toolkit (TLKTNAME, "devices");

          The available gnuplot output format DEVICE options for print()
          is one of:

         `ps'
         `ps2'
         `psc'
         `psc2'
               PostScript (level 1 and 2, mono and color).  The FLTK
               graphics toolkit generates PostScript level 3.0.

etc.

In the case of gnuplot, one could use the system() command to get a list 
of gnuplot terminals.  But if it were just some ASCII text inside the 
graphics_toolkit() function that needs to be updated from time to time, 
that would work too.

Also, note that the demo/test examples in "graphics_toolkit.m" are 
probably outdated because they don't account for the "qt" toolkit. 
E.g., if old_toolkit ends up being "qt", new_toolkit won't be defined.

Dan