writing-mode and arabic text

[Sebastian Weber]

If I set the writing-mode to rl-tb my text is flipped vertical. This happens 
because the CTM class rotates the transformation matrix for rendering 
according to the writing mode. If I want to write right-to-left this has 
nothing to do with mirroring of cause and I disabled it, because I want to 
print arabic text. So what is the purpose of mirroring in rl-tb 
writing-mode? What errors will appear if I disable the CTM.getWMctm() 
function that does the mirroring according to the writing-mode?
I achived printing (pdf) arabic text after some weeks of work ignoring any 
xsl:fo recommendations. The most things I did in the TextLayoutManager. Now 
I'm thinking about implementing it according to the recommendations and the 
BIDI algorithm. Is anyone already engaged in this?

Regards, Sebastian