+#define FREEBLOCK(x) {*x->useptr=NULL;x->next=mm->mmfree;mm->mmfree=x;}
+
+#define AARED "\x1b[41;31m"
+#define AABLUE "\x1b[44;34m"
+#define AAGREEN "\x1b[42;32m"
+#define AAYELLOW "\x1b[43;33m"
+#define AAGREY "\x1b[47;37m"
+#define AABLACK "\x1b[40;30m"
+#define AAWHITE "\x1b[47;37m"
+#define AAMAGENTA "\x1b[45;35m"
+#define AARESET "\x1b[0m"
+
+#define SAVENEARHEAP 0x200 // space to leave in data segment