You want an example of object oriented design on the mainframe? I have = no 
idea what the implementation language is but it could be PL/X, = assembler, C, 
etc. It does not matter. (It is clearly not a pure C++ =
library.)

IBM System SSL, a crypto library on z/OS.

Every call operates on one particular kind of data structure: an = 
"environment," a socket, etc. Each of those "packages" of {data = structure, 
one or more calls} could be thought of as an object and its =
methods.=20

Charles

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