Exclude routines that complicate maintenance
All external symbols must remain at constant
The branch table makes this easy for text symbols, but data
symbols do not have an equivalent mechanism.
The more data a library has, the more likely some
of them will have to change size.
Any change in the size of external data may
affect symbol addresses and break compatibility.
Include routines the library itself needs
Exclude routines that use much static data
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SCO OpenServer Release 5.0.7 -- 11 February 2003