Complex sentence: It is a double dictionary, the two parts being arranged according to the alphabetic order of initials and of final letters respectively, and was intended to be used in versification, in which acrostics and rime were the chief requisites.
Split into simpler sentences: It is a double dictionary, the two parts being arranged according to the alphabetic order of initials and of final letters respectively. It was intended to be used in versification, in which acrostics and rime were the chief requisites.