Judeo-Arabic script

Origin

The Judeo-Arabic script is a version of the Hebrew
script used to write the Judeo-Arabic language – a version of Arabic
with influences from Hebrew and Aramaic. Judeo-Arabic is used by Jews
in Arabic-speaking regions and began to develop after the 7th century
AD, when Islam was spreading to the Middle East and North Africa. Most
Judeo-Arabic literature is written by Jews for Jews and concerns Jewish
topics.

Notable Features

Written from right to left in horizontal lines.
Some letters have a final form which is used when they appear at
the end of a word. In the chart below, the final form is the one of
the left where letters appear in pairs.
There are no separate numerals in Hebrew. Instead, each letter has
a numeric value.
Long vowels are marked with alef (the first letter), waw
or yod (the last two letters). The same letters are used for
short vowels, though they are not usually marked at all.