Description from the author:
"VREXX is Visual REXX - a new way for OS/2 users to create their own Presentation Manager (PM) programs using REXX! VREXX provides users with a set of functions that can be called from REXX procedures. These functions open and close standard PM windows, providing programmable control over the appearance and positioning of the windows. Dialog box functions allow file selection, display of messages, entering numbers or text strings, and making single or multiple selections through radiobutton, checkbox or listbox controls. Table, Color and font selection dialogs are also available. And, graphics functions for setting pixels, drawing markers, lines, polygons, splines, arcs, circles and text (in multiple fonts) are included."
VREXX is very useful for little programs - for more complex applications you should use some other GUI package (for example Rexx Dialog).
See DelClass.Cmd for an example of using VREXX.
Note: If you're going to develop programs using VREXX you should have a tool like PSPM handy.