| ActiveTcl User Guide |

## Tcl/Tk Documentation > Tcl/Tk Keywords - B

### Tcl/Tk Applications | Tcl Commands | Tk Commands | Tcl Library | Tk Library

### A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

background
  BackgdErr, DetachPids, 3DBorder
background error
  bgerror, tkerror
backslash
  Backslash, SplitList, Utf
backslash substitution
  subst, ParseCmd, SubstObj
beep
  bell
bell
  bell
below
  Restack
beta
  GetVersion
bevel
  GetJoinStl
bgerror
  BackgdErr
binary
  binary, fconfigure, FindExec
binary code
  load, unload
binary library
  RegConfig
bind
  socket, keysyms, CrtCommand, CrtObjCmd, CrtCmHdlr, CrtGenHdlr, EventHndlr
binding
  bind, bindtags, event, keysyms, BindTable
bisque
  palette
bitmap
  bitmap, dialog, CanvPsY, ConfigWidg, GetBitmap, SetOptions
blocking
  close, fblocked, fconfigure, fcopy, fileevent, flush, gets, read, CrtChannel, CrtChnlHdlr, OpenFileChnl
boolean
  expr, if, BoolObj, ExprLong, ExprLongObj, GetInt, LinkVar, ConfigWidg, SetOptions
boolean value
  while
border
  3DBorder, ConfigWidg, ConfigWind, SetOptions
box
  ttk_Geometry
braces
  ParseCmd
break
  break, return, AllowExc
buffer
  flush
buffered I/O
  OpenFileChnl
buffering
  fconfigure
butt
  GetCapStyl
button
  button, ttk_button, ttk_checkbutton, ttk_menubutton, ttk_radiobutton
byte array
  fconfigure, ByteArrObj
bytecode
  tclvars

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