Ahmad, when you get a chance do me a small favor. Open another tab and go into the add-ons manager, then do a search for a persona named 'First Sentence'. To find it, go to any add-on page and at the top, click 'Personas" then just search. It has something written in Arabic and i'm wondering what it says. I assume this is a phrase because as you read from right to left, not all the letters are connected, which tells me these are words. You don't have to install it, just highlight it so you can read it.
I don't know if you're aware of the fact that you can check out how a persona looks on your browser by just mousing over it. Firefox will become like that persona until you simply remove the mouse cursor, then it'll come back to how it was before. I don't know if in your case it might require the Personas Plus add-on. My Firefox doesn't have it and the personas still work. I recommend that you check out one called 'Electric Chaos'. This one is amazing! On the top right of Firefox there are lightning bolts flashing. These aren't just pictures of lightning - it actually flashes. i installed it immediately.
