| odd | XMonad.Config.Prime |
| OffsetLeft | XMonad.Util.Image |
| offsetRegion | XMonad.Config.Prime |
| OffsetRight | XMonad.Util.Image |
| Older | XMonad.Hooks.InsertPosition |
| on | XMonad.Prelude |
| onBottom | XMonad.Layout.Drawer |
| once | XMonad.Util.ExtensibleConf |
| onceM | XMonad.Util.ExtensibleConf |
| onClassChange | XMonad.Hooks.OnPropertyChange, XMonad.Hooks.DynamicProperty |
| onCurr | XMonad.Util.Dzen |
| onCurrentScreen | XMonad.Layout.IndependentScreens |
| onDecorationClick | XMonad.Layout.DecorationEx.Common |
| OneBig | |
| 1 (Type/Class) | XMonad.Layout.OneBig |
| 2 (Data Constructor) | XMonad.Layout.OneBig |
| oneName | XMonad.Util.NamedActions |
| oneShotHook | XMonad.Hooks.DynamicHooks |
| onFocusedZ | XMonad.Util.Stack |
| onFocusedZM | XMonad.Util.Stack |
| onGroup | XMonad.Layout.SubLayouts |
| OnHost | XMonad.Layout.OnHost |
| onHost | XMonad.Layout.OnHost |
| onHosts | XMonad.Layout.OnHost |
| onIndexZ | XMonad.Util.Stack |
| onIndexZM | XMonad.Util.Stack |
| onLayout | XMonad.Layout.Groups |
| onLeft | XMonad.Layout.Drawer |
| onLogger | XMonad.Util.Loggers |
| OnlyFloat | XMonad.Layout.NoBorders |
| OnlyLayoutFloat | XMonad.Layout.NoBorders |
| OnlyLayoutFloatBelow | XMonad.Layout.NoBorders |
| onlyOnScreen | XMonad.Actions.OnScreen |
| OnlyScreenFloat | XMonad.Layout.NoBorders |
| onNextNeighbour | XMonad.Actions.PhysicalScreens |
| onPrevNeighbour | XMonad.Actions.PhysicalScreens |
| onRight | XMonad.Layout.Drawer |
| OnScreen | XMonad.Hooks.UrgencyHook |
| onScreen | XMonad.Actions.OnScreen |
| onScreen' | XMonad.Actions.OnScreen |
| onScreens | XMonad.Config.Prime |
| onTitleChange | XMonad.Hooks.OnPropertyChange, XMonad.Hooks.DynamicProperty |
| onTop | XMonad.Layout.Drawer |
| onWorkspace | XMonad.Layout.PerWorkspace |
| onWorkspaces | XMonad.Layout.PerWorkspace |
| onXPropertyChange | XMonad.Hooks.OnPropertyChange, XMonad.Hooks.DynamicProperty |
| onZipper | XMonad.Layout.Groups |
| Opacity | XMonad.Hooks.FadeWindows |
| opacity | |
| 1 (Function) | XMonad.Hooks.FadeWindows |
| 2 (Function) | XMonad.Layout.Monitor |
| opaque | XMonad.Hooks.FadeWindows |
| openDisplay | XMonad.Config.Prime |
| OpenPunctuation | XMonad.Prelude |
| openstreetmap | XMonad.Actions.Search |
| operationOn | XMonad.Config.Dmwit |
| option | XMonad.Util.Parser |
| optional | XMonad.Prelude |
| optionally | XMonad.Util.Parser |
| Or | XMonad.Util.WindowProperties, XMonad.Layout.SortedLayout, XMonad.Layout.IM, XMonad.Layout.Drawer, XMonad.Layout.Monitor, XMonad.Layout.ComboP |
| or | XMonad.Prelude, XMonad.Config.Prime |
| Ord | XMonad.Config.Prime |
| ord | XMonad.Prelude |
| Ordering | XMonad.Config.Prime |
| OrgMode | XMonad.Prompt.OrgMode |
| orgPrompt | XMonad.Prompt.OrgMode |
| orgPromptPrimary | XMonad.Prompt.OrgMode |
| orgPromptRefile | XMonad.Prompt.OrgMode |
| orgPromptRefileTo | XMonad.Prompt.OrgMode |
| Orientation | |
| 1 (Type/Class) | XMonad.Layout.HintedTile |
| 2 (Type/Class) | XMonad.Layout.GridVariants |
| orientation | XMonad.Layout.HintedTile |
| orIfPrefixed | XMonad.Actions.Prefix |
| origin | XMonad.Util.History |
| OrigWin | XMonad.Layout.Decoration |
| OtherIndicated | XMonad.Layout.NoBorders |
| OtherLetter | XMonad.Prelude |
| OtherNumber | XMonad.Prelude |
| OtherPunctuation | XMonad.Prelude |
| OtherSymbol | XMonad.Prelude |
| otherwise | XMonad.Prelude, XMonad.Config.Prime |
| outputOf | XMonad.Config.Dmwit |
| overlay | XMonad.Hooks.Modal |
| overlayedFloatMode | XMonad.Hooks.Modal |
| overlayedFloatModeLabel | XMonad.Hooks.Modal |
| overlayF | XMonad.Actions.EasyMotion |
| ownerGrabButtonMask | XMonad.Config.Prime |
| OwnFile | XMonad.Util.Run |
| oxymor00nTheme | XMonad.Util.Themes |