When Dehyphenate is set to yes, searching for a compound word like peace-making will also search for peacemaking, i.e. for the same word with hyphen removed.
The default value is no.
This command in available starting from the version 3.3.0
Affix, AlwaysFoundWord, IspellUsePrefixes, Spell, SQLWordForms, StopwordFile, Synonym, UseNumericOperators.