From Creatures Wikia
HOTS is a CAOS command used output the unique identifier of the object the pointer is over.
Used as a target identifier.
Returns the identifier of the object with the highest plane under the pointer.
Being used in the command line to destroy HOTS:
Being used to set a variable to HOTS for later use:
SETA va00 HOTS
Calling an activate one script in HOTS:
MESG WRIT HOTS 1