I think I can answer to me own question.
creating big letters or any symbol is not thing to do with
custom characters. let say we want to create a letter A.

00*00
0*0*0
*****
*000*

this is 4 by whatever display all we need to do is to decide
how wide are they going to be then  based on that we can put together
with proper symbols that are available. Now in order to display a big letter
A we need to create big letters and numbers and save them then
when the command received to display big letters we need to compare each
incoming
letter and match it with proper letters and spacing. this is how I think it
works
I am going to try it.I know it is going to work but is this the only way of
doing it?
is there any better way?

Andre Abelian



> But I thought you could only have eight special characters.  If you
> display some, then change them and display some more, does the
> display keep the original ones or are they changed?  I have used
> special characters for doing  bargraphs, but I only used seven I
> think.
>

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