The only ligature within the primary range of Arabic script in Unicode (U+06xx) is lām + alif. This is the only one compulsory for fonts and word-processing. Other ranges are for compatibility to older standards and contain other ligatures, which are optional. lām + alif
لا
Note: Unicode also has in its Presentation Form B FExx range a code for this ligature. If your browser and font are configured correctly for Arabic, the ligature displayed above should be identical to this one, U+FEFB ARABIC LIGATURE LAM WITH ALEF ISOLATED FORM:
ﻻ
U+0640 ARABIC TATWEEL + lām + alif
ـلا
Note: Unicode also has in its Presentation Form B U+FExx range a code for this ligature. If your browser and font are configured correctly for Arabic, the ligature displayed above should be identical to this one:
U+FEFC ARABIC LIGATURE LAM WITH ALEF FINAL FORM
ﻼ
Another ligature in the Unicode Presentation Form A range U+FB50 to U+FDxx is the special code for glyph for the ligature Allāh (“God”), U+FDF2 ARABIC LIGATURE ALLAH ISOLATED FORM:
ﷲ
This is a work-around for the shortcomings of most text processors, which are incapable of displaying the correct vowel marks for the word Allāh in Koran. Because Arabic script is used to write other texts rather than Koran only, rendering lām + lām + hā’ as the previous ligature is considered faulty:[5] If one of a number of fonts (mry_KacstQurn, KacstOne, DejaVu Sans, Scheherazade, Lateef, Iranian Sans) is installed on a computer (Iranian Sans is support by Wikimedia web-fonts), the word will appear without diacritics. lām + lām + hā’
لله or لله alif + lām + lām + hā’
الله or الله alif + lām + U+0651 ARABIC SHADDA + U+0670 ARABIC LETTER SUPERSCRIPT ALEF + hā’
اللّٰه (DejaVu Sans and KacstOne don't show the added superscript Alef)
An attempt to show them on the faulty fonts without automatically adding the