Get the current status for the shift and ctrl keys to a macro variable.
Possible values:
0 - no key pressed
1 - shift pressed
2 - ctrl pressed
3 - shift + ctrl pressed
PKKEYSTAT is probably best used with a macro called from an icon.
Sample macro:
MACRO KEYSTATSAMPLE
PKKEYSTAT;key
ifz;key-1;shifted
ifz;key-2;ctrled
ifz;key-3;ctrlshifted
LINE
go;done
:shifted
BOX
go;done
:ctrled
CIRP
go;done
:ctrlshifted
ARCB
:done
endm