Sentence:  Of course we observe the geometrical classifications from the earlier periods in some arts such as book decoration and <WSD>acrography</WSD> and brickworks but its prevalence in wooden making loop at Safavid period in building gigantic gates and Orosis (wooden muntin) of 3 doors and follogins 5 doors will explain to us the instrument improvement. 
Meaning of the word marked with <WSD> tags:  Decorative plaster work of various styles used in middle eastern architecture.