Clean up some markup cruft. A number of the macros that take no
parameters (like \UNIX) are commonly entered using an empty group to
separate the markup from a following inter-word space; this is not
needed when the next character is punctuation, or the markup is the
last thing in the enclosing group. These cases were marked
inconsistently; the empty group is now *only* used when needed.
diff --git a/Doc/lib/libtty.tex b/Doc/lib/libtty.tex
index d686778..c4f54b0 100644
--- a/Doc/lib/libtty.tex
+++ b/Doc/lib/libtty.tex
@@ -12,7 +12,7 @@
cbreak and raw modes.
Because it requires the \refmodule{termios} module, it will work
-only on \UNIX{}.
+only on \UNIX.
The \module{tty} module defines the following functions: