SAP EXPLICIT ENH POINTS documentation, setup help and example usage

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Explicit enhancement options
Explicit enhancement options are created in ABAP programs by the following statements:

ENHANCEMENT-POINT

Defines a position in an ABAP program as an enhancement option, at which one or more source code plug-ins can be inserted.

ENHANCEMENT-SECTION

Defines a section of an ABAP program as an enhancement option, which can can be replaced by one or more source code plug-ins.