abort"with a descriptive error message (may change into a
-22 throw(Control structure mismatch) in the future). You may also get a memory access error. If you are unlucky, this ambiguous condition is not caught.
DOES>in this respect, i.e., it changes the execution semantics of the last defined word no matter how it was defined.
: X POSTPONE [IF] ; IMMEDIATE.
Xis equivalent to