When you make a Sub the comments that you put above it should appear in the intellisense
'this is my comment about my super duper sub
'this sub should return the sum of two numbers
Sub ReturnAplusB(a as int, b as int) as int
return a + b
end sub
Then when you call
ReturnAplusB(
it should show your comments in the intellisense and also show what you need to provide to get the sub to work.
Something like that anyway, does it work in compiled libs?
It's in Klaus's rather nicely written beginners guide I think.
Remember you can always use Ctrl Space to bring up the intellisense engine.