B

background -- BackgdErr, DetachPids, 3DBorder

background error -- bgerror, tkerror

backslash -- Backslash, SplitList

backslash substitution -- subst

beep -- bell

bell -- bell

below -- Restack

bevel -- GetJoinStl

bgerror -- BackgdErr

binary -- FindExec

binary code -- load

bind -- CrtCommand, CrtObjCmd, socket, CrtGenHdlr, EventHndlr

binding -- BindTable, bindtags, event

bisque -- palette

bitmap -- CanvPsY, ConfigWidg, GetBitmap, bitmap, dialog

block time -- Notifier

blocking -- CrtChannel, CrtChnlHdlr, OpenFileChnl, close, fblocked, fconfigure, fileevent, flush, gets, read

boolean -- BoolObj, ExprLong, GetInt, LinkVar, expr, if, ConfigWidg

boolean object -- BoolObj

boolean type -- BoolObj

boolean value -- while

border -- 3DBorder, ConfigWidg, ConfigWind

break -- AllowExc, break, return

buffer -- flush

buffered I/O -- OpenFileChnl

buffering -- fconfigure

butt -- GetCapStyl

button -- button