+/* ------------------------------------------------------------------------- */
+/* Marker values */
+/* ------------------------------------------------------------------------- */
+
+extern char *describe_mv(int mval)
+{ switch(mval)
+ { case NULL_MV: return("null");
+
+ /* Marker values used in ordinary story file backpatching */
+
+ case DWORD_MV: return("dictionary word");
+ case STRING_MV: return("string literal");
+ case INCON_MV: return("system constant");
+ case IROUTINE_MV: return("routine");
+ case VROUTINE_MV: return("veneer routine");
+ case ARRAY_MV: return("internal array");
+ case NO_OBJS_MV: return("the number of objects");
+ case INHERIT_MV: return("inherited common p value");
+ case INDIVPT_MV: return("indiv prop table address");
+ case INHERIT_INDIV_MV: return("inherited indiv p value");
+ case MAIN_MV: return("ref to Main");
+ case SYMBOL_MV: return("ref to symbol value");
+
+ /* Additional marker values used in Glulx backpatching
+ (IDENT_MV is not really used at all any more) */
+
+ case VARIABLE_MV: return("global variable");
+ case IDENT_MV: return("prop identifier number");
+ case ACTION_MV: return("action");
+ case OBJECT_MV: return("internal object");
+
+ }
+ return("** No such MV **");
+}
+