-\newcommand{\cmd}[1]{\texttt{#1}}
-\newcommand{\func}[1]{\texttt{#1}}
-\newcommand{\macro}[1]{\texttt{#1}}
-\newcommand{\var}[1]{\texttt{#1}}
-\newcommand{\file}[1]{\texttt{#1}}
-\newcommand{\link}[1]{\texttt{#1}}
-
+\newcommand{\cmd}[1]{\texttt{#1}} % shell command
+\newcommand{\func}[1]{\texttt{#1}} % library function (or system call)
+\newcommand{\macro}[1]{\texttt{#1}} % macro constant
+\newcommand{\var}[1]{\texttt{#1}} % variable
+\newcommand{\file}[1]{\texttt{#1}} % file name
+\newcommand{\link}[1]{\texttt{#1}} % html link
+\newcommand{\type}[1]{\texttt{#1}} % variable type
+\newcommand{\param}[1]{\texttt{#1}} % function parameter
+\newcommand{\acr}[1]{\textsl{#1}} % acrostic (for pid, suid, etc.)