Word Services is an undocumented feature that allows you to take advantage of the System 7 Word Services feature. If a dictionary product supports System 7 Word Services then you can use it to spell check a ClarisWorks document (instead of the standard dictionary that ships with ClarisWorks).
This feature can be accessed by holding down the Option key and choosing Writing Tools from the Edit menu. The Word Services command will appear at the bottom of the Writing Tools sub menu. This will allow you to use additional dictionaries that support the Word Services feature incorporated in System 7.0, 7.1 or later versions of system software.
Claris tested the functionality of this feature with the Spells Well dictionary.