ZBrushCentral

variable reference page?

sorry for noob question. it is really silly but I stuck in the mud.

I can find the Command Reference page, but variable reference page.

could I get the list of variables?
( like as, Alpha:ItemInfo,Texture:Height… so on)

I would like to get the “mask is true or false” to execute the command.
I have no idea to find those variables.

http://docs.pixologic.com/user-guide/customizing-zbrush/zscripting/command-reference/#Variables