"Alias" keyword

Hello peeps.
I was looking through the Bmax docs and I noticed the section about the bmax keywords.

The very last one there is "Alias". However the IDE doesnt seem to recognize it as a blitz-related item when I try to use it in some way.

From the sound of it, it seems like an attempt at creating a TypeDef or #define sort of construct. Can't be sure though.

Anyone know what it is for?

Alias was removed a little while ago, it used to let you create aliases for functions and the like. (I don't think it was meant to be there).