{ "keepAlive", ArgInt, (void *) &appData.keepAlive, FALSE, INVALID },
{ "icstype", ArgInt, (void *) &ics_type, FALSE, INVALID },
{ "forceIllegalMoves", ArgTrue, (void *) &appData.forceIllegal, FALSE, INVALID },
+ { "showTargetSquares", ArgBoolean, (void *) &appData.markers, TRUE, FALSE },
#ifdef ZIPPY
{ "zippyTalk", ArgBoolean, (void *) &appData.zippyTalk, FALSE, (ArgIniType) ZIPPY_TALK },