-- SetProcessPropertyDoc.tioga
-- This file same as SetPropertyDoc.tioga
-- last edited by: L. Stewart, December 12, 1983 5:21 pm
name  SetProperty:, SetProcessProperty:
<<syntax>>
<<SetProperty key value>>
<<SetProcessProperty key value>>
<<If key is of the form $key then it is interpreted as the name of an ATOM, otherwise it is interpreted as a rope.  
Commander.PutProperty is used, so ropes match bases on contents.>>
<<Values are always ropes, with the exception that the value NIL is interpreted as NIL.  SetProperty key NIL essentially clears 
that property altogether.>>
<<description>>
<<These commands will set the values of properties on the commander or process properties lists.>>
<<examples>>
<<% SetProperty $Prompt "Hello "
Hello SetProperty $Prompt "%% "
%  >>
<<You are probably wondering why "%% " is used above.  The CommandTool uses ReadEvalPrint to manage user interaction, ReadEvalPrint 
uses IO.PutF to print prompts, and % is a special character to PutF. . .>>
<<% SetProperty $Prompt "% "
#####SetProperty $Prompt "%% "
%  >>
<<Where ##### is the default PutF reaction to a malformed format string.>>
<<% SetProcessProperty $WorkingDirectory ///Wierd/
% PrintWorkingDirectory
///Wierd/
% >>
<<This is an effective way to change your working directory, but the ChangeWorkingDirectory or CD commands are more sensible.>>
<<warnings>>
<<Many properties are not Rope.ROPEs, so setting them to some rope value is likely to produce unusual results, such as an uncaught 
signal.>>
<<stop/undo >>
<<Probably too fast to stop.>>
<<implementation >>
<<InitialCommandsImpl.mesa in CommandTool.df>>
<<contact>>
<<L. C. Stewart <Stewart.pa>>>
<<keyword hints>>
<<
help button info man>>
<<keywords>>
<<
to be supplied by the Index Czar>>