Know about regular expression configuration in FrameMaker.
FrameMaker uses the boost engine for Regex. For more information on Boost, see http://www.boost.org/.
You can write the regular expressions using the following syntax:
Perl (default): See Perl doc – Regular expressions
Grep: See Grep – Regular expressions
Egrep: See Egrep – Regular expressions
By default, you use the Perl regular expression syntax to write regular expressions in FrameMaker. However, to use either the Grep or Egrep regular expression syntax, you need to update the Regular Expression Syntax flag in the maker.ini.