Sorry for the late reply. If you want to save a string, you simply need a string and the SAVE command. You can save a text file with this syntax...
SAVE "TXT:<Filename>",<String$>
For example...
NAME$="EXAMPLE"
SAVE "TXT:SAVEDATA",NAME$
Do note that a dialog will appear to the user in order to save, meaning that the user may cancel saving.
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