note 73400 deleted from language.types.string by cmb

Note Submitter: fmouse at fmp dot com ---- It may be obvious to some, but it's convenient to note that variables _will_ be expanded inside of single quotes if these occur inside of a double-quoted string. This can be handy in constructing exec calls with complex data to be passed to other programs. e.g.: $foo = "green"; echo "the grass is $foo"; the grass is green echo 'the grass is $foo'; the grass is $foo echo "the grass is '$foo'"; the grass is 'green'