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