Apple Macintosh PowerBook 150 - Manual (Page 143)

Microsoft Excel (Windows), version 3.0
Documents in Microsoft Excel (Windows) version 3.0 are automatically saved
with the suffix .XLS.
To open these Microsoft Excel documents on the Macintosh, add one of the
following assignments to the PC Exchange control panel:
DOS suffix Macintosh application Document type
.XLS Lotus 1-2-3 (version 1.0) TEXT
.XLS Microsoft Excel (version 3.0) TEXT
Microsoft Word (Windows), version 2.0
Documents in Microsoft Word (Windows) version 2.0 are automatically saved
with the suffix .DOC.
To open these documents in Microsoft Word (Macintosh) version 5.0, add the
following assignment to the PC Exchange control panel:
DOS suffix Macintosh application Document type
.DOC Microsoft Word (version 5.0) WDBN
PageMaker (Windows), version 4.0
Documents in PageMaker (Windows) version 4.0 are automatically saved with
the suffix .PM4.
To open these documents in PageMaker (Macintosh) version 4.0, add the
following assignment to the PC Exchange control panel:
DOS suffix Macintosh application Document type
.PM4 PageMaker (version 4.0) ALB4
135 Exchanging Files with DOS or Windows