NSIS: How to make a required Section?

I really don't know if I should post this on my blog. It's something that almost (and I mean almost) everyone that use NSIS knows.

But, believe me, I have been looking for this how-to for years! -- literally!

Section "my_required_installs" SEC01
SectionIn RO
SectionEnd

Who would have thought that it would be all that simple?

And how in the world could I have missed the documentation on NSIS?

Now, I can update my KonsolScript Editor installer. :P