What is a Worksheet?The term worksheet is confusing. A worksheet is more like a web site or a workspace in a wiki site.
A worksheet is consistent of multiple pages.
A page can have multiple sections.
A section can show text, navigation links, data in a tabular format (Data Grid), or a chart.
Showing text is a normal function wiki page. Showing navigation links for a sections is like adding a TOC to a wiki page.
Adding a table (or data grid) is really the unique capability of APEX.