Hello All

Is there any way I can control the Hide/Unhide state of a row in
Conditional Formatting or elsewhere? For example: I've got rows 20-70
hidden. There's something already in A19, but if something is typed
in B19:K19 (merged cells) and or L19:N19 (merged cells), I want row 20
to Unhide. Then if I type something in B20:K20 (merged cells) and or
L20:N20 (merged cells), I want row 21 to Unhide and so on.