Regular Expression Syntax

  .      Matches any character

  \(     This marks the start of a region for tagging a match.

  \)     This marks the end of a tagged region.

  \n     Where n is 1 through 9 refers to the first through ninth
         tagged region when replacing. For example, if the search
         string was Fred\([1-9]\)XXX and the replace string was
         Sam\1YYY, when applied to Fred2XXX this would generate
         Sam2YYY.

  \<     This matches the start of a word.

  \>     This matches the end of a word.

  \x     This allows you to use a character x that would otherwise
         have a special meaning. For example, \[ would be interpreted
         as [ and not as the start of a character set.

  [...]  This indicates a set of characters, for example, [abc] means
         any of the characters a, b or c. You can also use ranges, for
         example [a-z] for any lower case character.

  [^...] The complement of the characters in the set. For example,
         [^A-Za-z] means any character except an alphabetic character.

  ^      This matches the start of a line (unless used inside a set,
         see above).

  $      This matches the end of a line.

  *      This matches 0 or more times. For example, Sa*m matches Sm,
         Sam, Saam, Saaam and so on.

  +      This matches 1 or more times. For example, Sa+m matches Sam,
         Saam, Saaam and so on.

  \d     Any decimal digit.
  \D     Any character that is not a decimal digit.

  \s     Any whitespace character.
  \S     Any character that is not a whitespace character.

  \w     Any "word" character.
  \W     Any "non-word" character.

  \xHH   Character with hex code HH.

  -----> Examples (don't use quotes)
         - Quote lines: find "^" replace with "> "
         - Unquote lines: find "^> " replace with ""
         - Remove line numbers: find "^[0-9]+" replace with ""
         - Convert tabs to double spaces: find "\t" replace with "  "