Certain characters, such as quotation marks and the backslash, have special functions in the software. If you need to use one of these metacharacters as a literal character in a string, you must “escape” the special function by inserting a backslash ( – Escape) preceding the metacharacter as shown in the following example:

‘This is a quotation mark (‘).’
‘This is a backslash (\).’

Any character string containing a metacharacter used as a literal must be enclosed in quotation marks.