This Unicode character picker allows you to produce or analyse runs of Arabic text using the Arabic script. Character pickers are especially useful for people who don't know a script well, as characters are displayed in ways that aid identification.
To properly display the text you will need to choose a font that is loaded on your system or device. The font list indicates which fonts are standard for Mac (Snow Leopard/Lion) and Windows7. See more information about standard OS fonts in Mac and Windows.
When working on an iPad or similar device, you should turn off Autofocus (just below the text area). This prevents the keyboard popping up after you input every character. You may also need to select a character twice to add it to the output field.