| BasedArrowDown | Sifflet.UI.LittleGtk, Sifflet.UI |
| BasedArrowUp | Sifflet.UI.LittleGtk, Sifflet.UI |
| baseEnv | Sifflet.Language.Expr |
| baseFunctionsRows | Sifflet.UI.Workspace, Sifflet.UI |
| bbBottom | Sifflet.Data.Geometry |
| bbCenter | Sifflet.Data.Geometry |
| bbFromRect | Sifflet.Data.Geometry |
| bbHeight | Sifflet.Data.Geometry |
| bbLeft | Sifflet.Data.Geometry |
| bbMerge | Sifflet.Data.Geometry |
| bbMergeList | Sifflet.Data.Geometry |
| BBox |
| 1 (Type/Class) | Sifflet.Data.Geometry |
| 2 (Data Constructor) | Sifflet.Data.Geometry |
| bbPosition | Sifflet.Data.Geometry |
| bbRight | Sifflet.Data.Geometry |
| bbSetWidth | Sifflet.Data.Geometry |
| bbSize | Sifflet.Data.Geometry |
| bbTop | Sifflet.Data.Geometry |
| bbToRect | Sifflet.Data.Geometry |
| bbWidth | Sifflet.Data.Geometry |
| bbX | Sifflet.Data.Geometry |
| bbXCenter | Sifflet.Data.Geometry |
| bbY | Sifflet.Data.Geometry |
| bbYCenter | Sifflet.Data.Geometry |
| bestParens | Sifflet.Foreign.Python |
| black | Sifflet.Data.TreeLayout |
| BlankCursor | Sifflet.UI.LittleGtk, Sifflet.UI |
| blueGreen | Sifflet.Data.TreeLayout |
| Boat | Sifflet.UI.LittleGtk, Sifflet.UI |
| Bogosity | Sifflet.UI.LittleGtk, Sifflet.UI |
| bool |
| 1 (Function) | Sifflet.Foreign.Python |
| 2 (Function) | Sifflet.Language.Parser |
| BottomLeftCorner | Sifflet.UI.LittleGtk, Sifflet.UI |
| BottomRightCorner | Sifflet.UI.LittleGtk, Sifflet.UI |
| BottomSide | Sifflet.UI.LittleGtk, Sifflet.UI |
| BottomTee | Sifflet.UI.LittleGtk, Sifflet.UI |
| boxPackEnd | Sifflet.UI.LittleGtk, Sifflet.UI |
| boxPackStart | Sifflet.UI.LittleGtk, Sifflet.UI |
| boxPackStartDefaults | Sifflet.UI.LittleGtk, Sifflet.UI |
| BoxSpiral | Sifflet.UI.LittleGtk, Sifflet.UI |
| Button | Sifflet.UI.LittleGtk, Sifflet.UI |
| Button1MotionMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| Button2MotionMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| Button3MotionMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonMotionMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| buttonNewWithLabel | Sifflet.UI.LittleGtk, Sifflet.UI |
| buttonPressEvent | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonPressMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonReleaseMask | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonsCancel | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonsClose | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonsNone | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonsOk | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonsOkCancel | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonsType | Sifflet.UI.LittleGtk, Sifflet.UI |
| ButtonsYesNo | Sifflet.UI.LittleGtk, Sifflet.UI |
