xboard(6) on Linux

Flags it lists

• --show-config
• -absoluteAnalysisScores
• -adapterCommand
• -addMasterOption
• -adjudicateDrawMoves
• -adjudicateLossThreshold
• -afterGame
• -afterTourney
• -analysisBell
• -animateSpeed
• -appendPV
• -autoClose
• -autoCopyPV
• -autoDisplayComment
• -autoDisplayTags
• -autoInstall
• -autoKibitz
• -autoLogo
• -autoRefresh
• -backgroundObserve
• -blackPieceColor
• -boardHeight
• -boardWidth
• -bookDepth
• -bookVariation
• -checkMates
• -clockFont
• -colorCShout
• -colorChallege
• -colorChannel
• -colorChannel1
• -colorKibitz
• -colorNickNames
• -colorNormal
• -colorRequest
• -colorSShout
• -colorSeek
• -colorShout
• -colorTell
• -commentFont
• -coordFont
• -cy
• -darkBackTextureFile
• -darkSquareColor
• -date
• -dateThreshold
• -debugFile
• -defaultCacheSizeEGTB
• -defaultFrcPosition
• -defaultHashSize
• -defaultMatchGames
• -defaultPathEGTB
• -defaultTourneyName
• -delayAfterQuit
• -delayBeforeQuit
• -depth
• -discourageOwnBooks
• -disguisePromotedPieces
• -dropMenu
• -dualBoard
• -egtFormats
• -eloThresholdAny
• -eloThresholdBoth
• -engineDebugOutput
• -epd
• -evalThreshold
• -evalZoom
• -fNoOwnBookUCI
• -fSAN
• -fUCCI
• -fUCI
• -fUSI
• -fcp
• -fd
• -fe
• -fh
• -firstChessProgram
• -firstChessProgramNames
• -firstComputerString
• -firstDirectory
• -firstEngine
• -firstHasOwnBookUCI
• -firstHost
• -firstInitString
• -firstIsUCI
• -firstLogo
• -firstNPS
• -firstNeedsNoncompliantFEN
• -firstOptions
• -firstPgnName
• -firstProtocolVersion
• -firstScoreAbs
• -firstTimeOdds
• -firstXBook
• -fischerCastling
• -flashCount
• -flashRate
• -fn
• -fontSizeTolerance
• -gameListFont
• -gameListTags
• -gateway
• -hideThinkingFromHuman
• -highlightMoveWithArrow
• -highlightSquareColor
• -holdingsSize
• -icsAlarmTime
• -icsFont
• -icscomm
• -icshelper
• -icshost
• -icslogon
• -icsport
• -inc
• -ini
• -initString
• -initialMode
• -inscriptions
• -installEngine
• -installTheme
• -internetChessServerCommPort
• -internetChessServerHelper
• -internetChessServerHost
• -internetChessServerLogonScript
• -internetChessServerPort
• -lgf
• -lgi
• -lightSquareColor
• -liteBackTextureFile
• -loadGameFile
• -loadGameIndex
• -loadPositionFile
• -loadPositionIndex
• -logoDir
• -logoSize
• -lowTimeWarningColor
• -lpf
• -lpi
• -matchGames
• -matchPause
• -materialDraws
• -mcBookMode
• -memoHeaders
• -messageFont
• -mg
• -mode
• -monoMouse
• -moveHistoryFont
• -movesPerSession
• -mps
• -msLoginDelay
• -nameOfDebugFile
• -niceEngines
• -noGUI
• -oneClickMove
• -onlyOwnGames
• -overrideLineGap
• -pairingEngine
• -participants
• -pasteSelection
• -pgnEventHeader
• -pgnExtendedInfo
• -pgnNumberTag
• -pgnTimeLeft
• -pid
• -pieceImageDirectory
• -pieceMenu
• -pieceNickNames
• -pieceToCharTable
• -polyglotBook
• -polyglotDir
• -positionDir
• -premoveBlackText
• -premoveWhiteText
• -preoveHighlightColor
• -recentEngineList
• -recentEngines
• -remoteShell
• -remoteUser
• -repeatsToDraw
• -results
• -rewindIndex
• -rsh
• -ruleMoves
• -ruser
• -sNoOwnBookUCI
• -sSAN
• -sUCCI
• -sUCI
• -sUSI
• -sameColorGames
• -saveDate
• -saveGameFile
• -saveOutOfBookInfo
• -savePositionFile
• -saveSettingsFile
• -saveSettingsOnExit
• -scoreWhite
• -scp
• -sd
• -se
• -searchDepth
• -searchMode
• -searchTime
• -secondChessProgram
• -secondComputerString
• -secondDirectory
• -secondEngine
• -secondHasOwnBookUCI
• -secondHost
• -secondInitString
• -secondIsUCI
• -secondLogo
• -secondNPS
• -secondNeedsNoncompliantFEN
• -secondOptions
• -secondPgnName
• -secondProtocolVersion
• -secondScoreAbs
• -secondTimeOdds
• -secondXBook
• -seedBase
• -seekGraph
• -settingsFile
• -sg
• -sgf
• -sh
• -shoMoveTime
• -showEvalInMoveHistory
• -showTargetSquares
• -shuffleOpenings
• -smpCores
• -sn
• -soundCShout
• -soundChallenge
• -soundChannel
• -soundChannel1
• -soundDirectory
• -soundIcsAlarm
• -soundIcsDraw
• -soundIcsLoss
• -soundIcsUnfinished
• -soundIcsWin
• -soundKibitz
• -soundMove
• -soundProgram
• -soundRequest
• -soundRoar
• -soundSShout
• -soundSeek
• -soundShout
• -soundTell
• -spf
• -st
• -sweepPromotions
• -syncAfterCycle
• -syncAfterRound
• -tagsFont
• -tc
• -td
• -telnetProgram
• -testClaims
• -tf
• -timeControl
• -timeDelay
• -timeIncrement
• -timeOddsMode
• -tourneyCycles
• -tourneyFile
• -tourneyOptions
• -tourneyType
• -trivialDraws
• -trueColors
• -tt
• -useBoardTexture
• -usePolyglotBook
• -userName
• -uxiAdapter
• -variant
• -variations
• -viewer
• -viewerOptions
• -whitePieceColor