Modedefs.bas

there are more and more code examples posted that have an
INCLUDE "MODEDEFS.BAS"
that is not needed.

If your code does not contain any
Debug, Serin/out, Shiftin/out, Xin/out
statements you don't need to include modedefs.bas.

The only thing modedefs.bas does is to assign some aliases to internally used mode numbers.

If you are using one of these commands and specify the mode number in your statement
rather than using one of the aliases (i.e. $4054 or 16468 instead of N9600)
you don't need to include it either.