Indicates a command to be invoked whenever a new variable is selected into the workbench. This allows feedback from double clicks on a variable to the new condition - enabling very quick causal tracing. A generic causal tracing screen is:
:SCREEN CAUSE
TEXTONLY,"Causal tracing -",0,2,50,0,R
WBVAR,"",50,2,0,0,L
TOOL,"TR1",2,6,96,42,,,WORKBENCH>CAUSES TREE
BUTTON,"T - Trace on highlight",\
5,50,0,0,L,Tt,SPECIAL>SECONDCLICK|TR1,
BUTTON,"S - Select a new variable to trace"\
,5,70,0,0,L,Ss,SPECIAL>VARSELECT|New variable for tracing
SETWB,"",0,0,0,0,,,,CAUSE
The last command causes the screen to be refreshed with the new workbench variable each time a new variable is selected into the workbench.
