Returns the memory address of a variable, just as a pointer of other languages
Implemented by: msatari, level2, colorext, GWBASIC, ABasiC, QBasic, VBDOS, FreeBASIC, ugBASIC
With variations: colormc (undocumented), MSX (negative value requires adding 65535), Gambas
Also written as:
p = VARPTR(a$)
VARPTR works kinda like the & operator before a variable's name in the C language.