Explain briefly the purpose of this page (Why it is useful to the community/reader). E.g. alias The purpose of this page is to clarify the understanding of the system logic and requirements in relation to.....
This should be an executive summary of the content and argument being made in the document. Basically a summary (not repeat) of the information you are explaining
Other Section 1:
This is the main part of your document where you talk through the system logic/ behaviour you are explaining. Use pictures to emphasise the points you are trying to make or to illustrate the transactions/ selection screens/ reports etc that you are discussing.
Other Section 2:
Same as above, you can have as many sections as you need to make the information you are explaining as clear and simple to follow as possible.
Related Documents: Insert SAP Help links or other WIKI content
Related Notes: Insert links to any related notes/KBA that support your topic or are related