string xencode(float f);
float xdecode(string s);
-#ifndef COMPAT_XON010_CHANNELS
+// Play all sounds via sound7, for access to the extra channels.
+// Otherwise, channels 8 to 15 would be blocked for a weird QW feature.
#define sound(e,c,s,v,a) sound7(e,c,s,v,a,0,0)
-#endif
float lowestbit(float f);