Hello everyone ... I'm a real newbie. So please take nothing for granted.
Working in Excell 2007 (Wanting 97-2003 Compatible mode).

What I want to do is based on a cell (containing a formula) within each
group of lines and that is to hide that specific group of lines if the
formula equates to TRUE. Also, I would like to un-hide all rows afterwards.
These functions could be linked to two button controls (on the same
worksheet).

Worksheet name = Exhibit1
There is 142 groups of 4 lines (consisting of 20 columns).
The top left cell of each group (A?) is a cell with a formula resulting in
TRUE (=0) or FALSE (<0) [based on one cell located in the 3rd line eg:
"=IF(R28=0,TRUE,FALSE)"]

Not sure where to start or where to put the code.

Please help ... any suggestions or solutions would be very much appreciated.
Thanks,