(Alef), L. (Lam), R. (Raa), the Surah opens with these letters introductory

﴿الٓرۚ تِلۡكَ ءَايَٰتُ ٱلۡكِتَٰبِ ٱلۡمُبِينِ ﴾
[يُوسُف: 1]

(Alef), L. (Lam), R. (Raa), the Surah opens with these letters introductory front the Arabic Alphabet to draw attention to the miracle of the Quran which though written in the people's tongue, cannot be emulated. These are divinely discoursed verses flowing with the precision and grace that are symbolic of the Book -the Quran- the spirit of truth that guides into all truth

﴿الر تلك آيات الكتاب المبين﴾ [يُوسُف: 1]

Dr Kamal Omar
L. R. These are the signs of Al-Kitab-ul-Mobin

Dr Laleh Bakhtiar
Alif L[m R[. That are the signs of the clear Book]

Dr Munir Munshey
Alif, Laam, Ra; These are the verses of the clear lucid Book

Edward Henry Palmer
Those are the signs of the perspicuous Book

Farook Malik
Alif L'am Ra. These are the verses of the Book that make things clear

George Sale
These are the signs of the perspicuous book

Maududi
Alif. Lam. Ra´. These are the verses of a Book that clearly expounds the truth