Appendix E: File Compatibility
PenCell can read Excel 3.0 and Excel 4.0 files. It writes
to Excel 4.0 files.
Only a subset of Excel's features and functions are
supported in PenCell. Unsupported functions, after
being imported into PenCell, evaluate to error value and
are displayed in edit bar with the prefix XL_ (such as
XL_DMAX(...)).
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