The following table describes other regular expression constructs:
| 
Table B.9 | List of Other Constructs | 
|  |  | 
| 
" " | 
Encapsulates a fixed string of characters. | 
| 
{ } | 
Provides a call to a lexical macro. The use of a WordMacro (which is similar to \w) would appear as {WordMacro}. | 
| 
(?# ) | 
Inline comment inserted within a regular expression. The comment terminates at the first closing parenthesis character. | 
| 
| | 
Provides an alternation construct that matches any one of the terms separated by the | (vertical bar) character. For example, cat|dog|tiger. The left most successful match wins. |