## 9.3 Advanced Issues: Escaping and !

When a reference is silenced with the ! character and the ! character preceded by an \ escape character, the reference is handled in a special way. Note the differences between regular escaping, and the special case where \ precedes ! follows it:

#set( $foo = "bar" )$\!foo
$\!{foo}$\\!foo
$\\\!foo This renders as: $!foo $!{foo}$\!foo
$\\!foo Contrast this with regular escaping, where \ precedes $:

\$foo \$!foo
\$!{foo} \\$!{foo}

This renders as:

$foo$!foo \$!{foo} \bar