IS AN HERO would be used to remove a variable from the closest enclosing block containing the variable. It's not really needed unless we implement dynamic scope, in which case it would act like C++'s delete or C's free; unless we implement type checking, in which case you should probably just make two variables; or unless we implement classes, in which case this would be a good way to call the class's destructor.

Example usage on a variable (Assume we're doing type checking, thus reassigning VAR would not work.):

	HAI
	I HAS A VAR ITZ "LET ME SHOW YOU MY VAR"
	VISIBLE VAR
	VAR IS AN HERO
	I HAS A VAR ITZ 8
	UP VAR!!1
	VISIBLE VAR
	KTHXBYE

Should produce:

	LET ME SHOW YOU MY VAR
	9
 --- //Michael Buckley, 2007/05/30 18:18//

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As far as can be told, LOLCODE is dynamically typed.  What's wrong with writing the code above as

        HAI
	I HAS A VAR ITZ "LET ME SHOW YOU MY VAR"
	VISIBLE VAR
	I HAS A VAR ITZ 8
	UP VAR!!1
	VISIBLE VAR
	KTHXBYE

 --- //Jacob Krall, 2007/05/30 19:57//

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Like I said, it could only be used in that way if LOLCODE was not dynamically typed. There's a discussion in [[contributions: typing]] about whether to introduce static typing. However, it would also be useful in two other instances:
  * destroying variables allocated on the heap
  * explicitly calling destructors for object instances

Of course, neither object-orientation or or the ability to allocate objects on the heap (similar to C's malloc or C++'s new) have been implemented yet, so I didn't provide examples for usage for those cases. IS AN HERO is useless for the moment. I wrote it thinking about the less immediate future of the language.

 --- //Michael Buckley, 2007/05/31 04:09//