1. \ScriptEnv{environment} {prefix} {postfix}
This command defines a LaTeX environment
\begin{environment}
body
\end{environment}
which outputs its body in plain format, between the specified prefix and postfix.
2. \ScriptCommand{\command} {prefix} {postfix}
This command defines an environment
\command
body
\Endcommand
which outputs its body in plain format, between the specified prefix and postfix.
3. \JavaScript...\EndJavaScript