`'''tcl_endOfWord'''`, a [Tcl Commands%|%built-in] [Tcl] [command], is used by some Tcl commands to determine where words end in [string%|%strings]. It is not, however, used by [Tcl] when parsing scripts for evaluation. ** See Also ** `$[tcl_wordchars]` and `$[tcl_wordchars%|%tcl_nonwordchars]`: ** Documentation ** [http://www.tcl.tk/man/tcl/TclCmd/library.htm%|%official reference]: <> Tcl syntax help | Arts and crafts of Tcl-Tk programming | Command | Internals