signs I need at abiword equation editor

hello

as I have wrote before I must be able to edit equation
well I'm going through sign I need that exist at latex and I can't type
at abiword. I'm putting them here in hope to find out how can I use them.

I also was wish to have a guide for equation editing at abiword as there
are some diffrances betwin latex and abiword.

I used this website for signs:

http://www.maths.tcd.ie/~dwilkins/LaTeXPrimer/

thanks

first of all I know there is a problem adding a new line or puting an
epsilon sign.

well now here are my problems
1. I can't place any of the harpoons signs
2. the not sign don't work
3. no long arrows.
4. I can't insert any spaces at the equation (~ just give me a big red
square)
5.I can't place any off the symbols in this page :
http://www.maths.tcd.ie/~dwilkins/LaTeXPrimer/MathAccents.html

that's what I have had trouble with. please help me...
yotam
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Received on Mon Jul 17 20:28:22 2006