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1. If PageHeader$="NullString", the function returns "NullString".
2. If PageHeader$ is not found, the function also returns "NullString".
3. If PageEnd$="NullString", the function returns all text from Document starting with PageHeader$.
4. If PageEnd$ is not found, the function also returns all text from Document starting with PageHeader$.
5. The last line of the result returned by SECTION$() is always terminated by a CrLf a CrLf (Carriage Return + LineFeed: Chr$(13)+Chr$(10) ). Multiple repeating CrLfrepeating CrLf's at the end of an extracted section are removed as well as trailing strings from each line in that result.
6. One can also use the PARAGRAPH$() function to return a section of a document.

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