the environment variable @env{PATH}. The standard file name
constructs, @samp{~}, @samp{.}, and @samp{..}, are interpreted as
usual in @code{exec-path}, but environment variable substitutions
-(@samp{$HOME}, etc.) are not recognized; use
+(@samp{$HOME}, etc.)@: are not recognized; use
@code{substitute-in-file-name} to perform them (@pxref{File Name
Expansion}). @code{nil} in this list refers to
@code{default-directory}.
when creating the process, based on the value of the variable
@code{process-connection-type} (see below). Ptys are usually
preferable for processes visible to the user, as in Shell mode,
-because they allow for job control (@kbd{C-c}, @kbd{C-z}, etc.)
+because they allow for job control (@kbd{C-c}, @kbd{C-z}, etc.)@:
between the process and its children, whereas pipes do not. For
subprocesses used for internal purposes by programs, it is often
better to use a pipe, because they are more efficient, and because
stands for the new subprocess in Lisp. The argument @var{name}
specifies the name for the process object; if a process with this name
already exists, then @var{name} is modified (by appending @samp{<1>},
-etc.) to be unique. The buffer @var{buffer-or-name} is the buffer to
+etc.)@: to be unique. The buffer @var{buffer-or-name} is the buffer to
associate with the process.
If @var{program} is @code{nil}, Emacs opens a new pseudoterminal (pty)