By Semicolons, English grammar

I doubt that it is more nearly acceptable that we reproduce the exact same thread with a new date on it. The word that I mispelled was "clause." If you reread the post, I misspelled several words. I was copying from the Gregg reference manual (an English grammar / usage reference manual) as...

What's a clause? I am not understanding what an independent clause is when using a comma or semicolon? How do I know wether to use a comma or semicolon? Please give example. <Edited: The word is grammar. Also, it would REALLY help us, as Francesca has already pointed out in another post, if...