It's time to stop listing large DM maps by default.
Duel has been a supported gametype for years now, the mapinfo generator
adds it for smaller maps and the .arena file parser supports it on
Q3/CPMA duel maps.
set g_duel 0 "Duel: frag the opponent more in a one versus one arena battle"
//set g_duel_warmup 180 "Have a short warmup period before beginning the actual duel"
set g_duel_with_powerups 0 "Enable powerups to spawn in the duel gamemode"
-set g_duel_not_dm_maps 0 "when this is set, DM maps will NOT be listed in duel"
+set g_duel_not_dm_maps 1 "when this is set, DM maps will NOT be listed in duel"
// ==============================
// free for all and team mayhem