FROTH is an involving product... Author is currently working on graphics 
definitions. It take a lot of time to implement these words. So, here is the 
list of things done, and others things not yet done. 

These words are not documented into the manual (MANU.DOC). So, ask online 
help. 
Example: USE clip


DONE
----

    320x200x16 640x200x16 640x350x4 640x350x16 640x480x2 
    320x200x256
    800x600x16
        Select a graphics mode.
        
    clear
        Clear the whole graphics screen.
        
    gmode_copy
    gmode_xor
    gmode_or
    gmode_and
        Define raster operations for next graphics draw (line, box, 
        get/putvideo, drawssprite, ...).
        
    clip
        Define the cliping rectangular area.
        
    line
        Draw a line.
        
    box
        Draw a filled or not filled rectangle.
        
    videoregion
    getvideo
    putvideo
        Used to save / restore graphics screen rectangular regions.
        
    sprite
    >color_sprite
    >def_sprite
    init_sprite
    draw_sprite
        Used to define and draw sprites.


TO BE DONE  (under developement)
----------

- Cliping is not implemented for line and sprite.
- BOX only work for filled box.
- Drawing on others graphics pages than page #0.
