Create a memory managed data type
SLang_MMT_Type *SLang_create_mmt (unsigned char t, VOID_STAR ptr)
The SLang_create_mmt function returns a pointer to a new
memory managed object. This object contains information necessary
to manage the memory associated with the pointer ptr which
represents the application defined data type of type t.
SLang_object_from_mmt, SLang_push_mmt, SLang_free_mmt