allocation space. It get updated by all words that allocate memory.
-.Usage example
+====
+.allocate 1024 bytes on the heap
+[caption='Usage example {counter:example} ']
****
-1024 HEAP @ + HEAP ! ( allocate 1024 bytes on the heap )
+1024 HEAP @ + HEAP !
****
+====
See also <<p_allot,ALLOT>>.