The Streaming Editor can be used to transform, or enrich, a file in any text format into another type of format. This tool is useful for working with many different kinds of files that need to be converted from one file format into another.

TextGrid provides two Streaming Editors: A XSLT-2.0 based transformation service for working with XML source files, and FnQuery, a prolog-based transformation tool that can also handle non-XML input data.

Further information is available here:

R2.3: User's Manual TextGrid-Tools (on page 70-74)