@w{text}: Prevent Line Breaks@w{text} outputs text and prohibits line breaks
within text.
You can use the @w command to prevent TeX from automatically
hyphenating a long name or phrase that happens to fall near the end of a
line. For example:
You can copy GNU software from @w{@samp{ftp.gnu.org}}.
produces
You can copy GNU software from ftp.gnu.org.
You can also use @w to produce a non-breakable space, fixed at
the width of a normal interword space:
@w{ } @w{ } @w{ } indentation.
produces:
indentation.
The space from @w{ }, as well as being non-breakable, also
will not stretch or shrink. Sometimes that is what you want, for
instance if you're doing some manual indenting. However, usually you
want a normal interword space that does stretch and shrink (in the
printed output); see the @tie command in the next section.