-void Con_Print (char *txt);
-void Con_Printf (char *fmt, ...);
-void Con_DPrintf (char *fmt, ...);
-void Con_SafePrintf (char *fmt, ...);
+void Con_Print (const char *txt);
+void Con_Printf (const char *fmt, ...);
+void Con_DPrintf (const char *fmt, ...);
+void Con_SafePrintf (const char *fmt, ...);