I seem to recall this being done at some point, but I couldn't find it anywhere...
I've got a sub-summary report that can get fairly lengthy. The report has a sub-summary part, body and then a sub-summary part with a total in it. Very basic.
I'd like to be able to click on the top summary part and "roll up" the body part underneath it - just for that summary, not the entire report. Click on it again and the body section appears again. Ideally, the leading and trailing sub-summary bits remain visible.