| fbDrawGlyph | NanoUI |
| fbDrawShaped | NanoUI |
| fbPrepare | NanoUI |
| FillCircle | NanoUI.Testing, NanoUI |
| fillColor | NanoUI |
| fillH | NanoUI |
| FillQuadGradient | NanoUI.Testing, NanoUI |
| FillRect | NanoUI.Testing, NanoUI |
| FillRoundedRect | NanoUI.Testing, NanoUI |
| FillTriangle | NanoUI.Testing, NanoUI |
| fillW | NanoUI |
| finalizeTextFieldMouse | NanoUI.Frame.TextEdit |
| findAncestorMaxW | NanoUI.Layout.Solve |
| findChildM | NanoUI.Layout.Arena |
| findExact | NanoUI.Testing.Harness |
| findGrabHover | NanoUI.Testing.Harness |
| findHeader | NanoUI.Testing.Harness |
| findNodeByKey | NanoUI.Frame.Hit |
| findNodeByWidgetId | NanoUI.Frame.Hit |
| findNodeM | NanoUI.Layout.Arena |
| findNodeRevM | NanoUI.Layout.Arena |
| findRightmost | NanoUI.Testing.Harness |
| Fit | NanoUI |
| Fixed | NanoUI |
| fixedAspectH | NanoUI |
| fixedAspectW | NanoUI |
| fixedH | NanoUI |
| fixedW | NanoUI |
| fixedWH | NanoUI |
| flex | NanoUI |
| FlexScratch | |
| 1 (Type/Class) | NanoUI.Layout.Arena |
| 2 (Data Constructor) | NanoUI.Layout.Arena |
| floatingNodeCount | NanoUI.Layout.Arena |
| floatingPanelActive | NanoUI.Testing |
| floatingPanelRects | NanoUI.Testing |
| fmAdvance | NanoUI |
| fmAscent | NanoUI |
| fmBackend | NanoUI |
| fmGlyph | NanoUI |
| fmKerning | NanoUI |
| fmLineHeight | NanoUI |
| fmShape | NanoUI |
| fmSnapScale | NanoUI |
| fnv1a | NanoUI.Id |
| foldFlowChildrenM | NanoUI.Layout.Arena |
| foldInputKeys | NanoUI.Input, NanoUI |
| foldNodeRevM | NanoUI.Layout.Arena |
| foldNodesM | NanoUI.Layout.Arena |
| foldSpanArena | NanoUI.Testing |
| FontBackend | |
| 1 (Type/Class) | NanoUI |
| 2 (Data Constructor) | NanoUI |
| fontBlack | NanoUI |
| fontBold | NanoUI |
| fontColor | NanoUI |
| FontDanger | NanoUI |
| fontDanger | NanoUI |
| fontExtraBold | NanoUI |
| FontHeading | NanoUI |
| fontHeading | NanoUI |
| fontItalic | NanoUI |
| fontLight | NanoUI |
| fontMedium | NanoUI |
| FontMetrics | |
| 1 (Type/Class) | NanoUI |
| 2 (Data Constructor) | NanoUI |
| FontMono | NanoUI |
| fontMono | NanoUI |
| FontMuted | NanoUI |
| fontMuted | NanoUI |
| fontOblique | NanoUI |
| FontRegular | NanoUI |
| fontRegular | NanoUI |
| FontResolver | NanoUI.Layout.Solve |
| fontSemiBold | NanoUI |
| fontSize | NanoUI |
| fontSizeScale | NanoUI |
| fontStrike | NanoUI |
| FontStyle | NanoUI |
| fontStyle | NanoUI |
| FontStyleItalic | NanoUI |
| FontStyleNormal | NanoUI |
| FontStyleOblique | NanoUI |
| fontUnderline | NanoUI |
| FontVariant | NanoUI |
| FontWeight | NanoUI |
| fontWeight | NanoUI |
| forChildNodes_ | NanoUI.Layout.Arena |
| forDrawCmdsInLayer_ | NanoUI.Testing |
| foreground | NanoUI |
| formatCoreRtsRows | NanoUI.Debug |
| formatDrawRows | NanoUI.Debug |
| formatFpsRows | NanoUI.Debug |
| forNodes_ | NanoUI.Layout.Arena |
| FrameMsg | |
| 1 (Type/Class) | NanoUI.Context.Types, NanoUI.Context, NanoUI.Monad, NanoUI.Testing |
| 2 (Data Constructor) | NanoUI.Context.Types, NanoUI.Context, NanoUI.Monad, NanoUI.Testing |
| freshImageId | NanoUI |
| fromComponents | NanoUI |
| fromText | NanoUI.Widgets.TextBuffer |
| fsCap | NanoUI.Layout.Arena |
| fsH | NanoUI.Layout.Arena |
| fsIdx | NanoUI.Layout.Arena |
| fsOutH | NanoUI.Layout.Arena |
| fsOutW | NanoUI.Layout.Arena |
| fsW | NanoUI.Layout.Arena |