macro to allow for expand/collapse of a section or region of the page

(I searched JIRA to see if this issue already exists and did not find anything.)

I suggest creating a macro that would allow for a region of a page to be expanded or collapsed-- not unlike how comments and children are handled. In some cases, we have lengthy pages with sections that might be better served by having a user drill-down into its contents rather than displaying all of the contents. While it might be a reasonable work-around to create other [child] pages, that does not suit some of the documents/pages that we have created.