Syntax:

mark:
GOTO mark

Jumps to the jumpmark: æmarkÆ.
You cannot call this from within a SUB to a jumpmark in another SUB or the main program and vice versa.
Jumpmarks are defined with a æ:Æ (Colon)

Sample:

PRINT ôThis appearstö, 100, 100
GOTO shortcut
PRINT ôSeek meö, 100, 150 // This wonÆt appear
shortcut:
SHOWSCREEN
MOUSEWAIT