rem: return WMGetRulerMargin(tPtr->ruler, which);
add: return WMGetRulerMargins(tPtr->ruler, which);
context: WMGetTextRulerMargin(WMText *tPtr, char which){    if(!tPtr) return 0;    if(tPtr->monoFont)        return 0;    return WMGetRulerMargin(tPtr->ruler, which);}