> \cals@span@ifL=macro:
#1->\iftrue .
> \cals@span@ifT=macro:
#1->\iffalse .
> \cals@span@ifR=macro:
#1->\iftrue .
> \cals@span@ifB=macro:
#1->\iffalse .
> \cals@span@ifL=macro:
#1->\iffalse .
> \cals@span@ifT=macro:
#1->\iftrue .
> \cals@span@ifR=macro:
#1->\iffalse .
> \cals@span@ifB=macro:
#1->\iftrue .