SEMONE
From Just Solve the File Format Problem
SEMONE is a file compression utility for DOS, and associated .ONE file format, developed by Vladimir V. Semenyuk.
Identification
For the v0.6 series (the latest known versions), files start with ASCII "SEM". The next two bytes seem to be a version number:
-
0x68 0x29(decimal 10600) for v0.6 build 00 - Presumably
0x69 0x29for v0.6 build 01 -
0x6a 0x29(decimal 10602) for v0.6 build 02
The change log says that v0.6 build 00 introduced a "new format", so until some earlier versions can be found for analysis, nothing can be said about the format they use.
