### 7.3 Searching Source Files

There are two commands for searching through the current source file for a regular expression.

`forward-search` regexp
`search` regexp
  The command ``forward-search regexp`' checks each line, starting with the one following the last line listed, for a match for regexp. It lists the line that is found. You can use the synonym ``search regexp`' or abbreviate the command name as `fo`.

`reverse-search` regexp
  The command ``reverse-search regexp`' checks each line, starting with the one before the last line listed and going backward, for a match for regexp. It lists the line that is found. You can abbreviate this command as `rev`.