+=== Word: MALLOC
+
+....
+Data stack: ( n -- a )
+....
+
+"MALLOC" is a word that allocates memory using mmap of at least n
+bytes and returns the lowest address of the allocated block.
+
+Note that this makes new page allocations for the process from the
+kernel, and the granularity is in pages, i.e. a multiple of 4 kb.