This feature lets you save multiple copies of your WordStar "user area" in .CFG files, and specify a particular .CFG file when starting WordStar. Each .CFG files is only about 8Kb in size, so you can create many of them to suit how you work, or each project you're working on. You can then start WordStar using the appropriate configuration.
You can check if you currently have any .CFG files by typing DIR *.CFG at the DOS prompt from within your WordStar directory.
WordStar for DOS Command Reference
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