You might encounter an issue in which a corrupted file is created and Microsoft Word returns the following pop-up message:
This issue occurs under the following conditions:
Other destinations, such as PDF, Tagsets.RTF, and HTML seem to ignore the 256-character limit and output the full PROCLABEL text in the table of contents. In addition, if the PROCLABEL text does not contain curly brackets, the RTF destination outputs the file with truncated text. You can use any of these alternatives as workarounds.