Original: Jews in Arab countries wrote—sometimes in their dialects, sometimes in a more classical style—in a mildly adapted Hebrew script  (rather than using Arabic script), often including consonant dots from the Arabic alphabet to accommodate phonemes that did not exist in the Hebrew alphabet.
Simplified: Most Judæo-Arabic dialects were written in modified forms of the Hebrew alphabet, often including consonant dots from the Arabic alphabet to accommodate phonemes that did not exist in the Hebrew alphabet.