Altar rails and windows of those churches were highly decorated with transparent shallow string-like ornament that is called "pleter" (meaning to weed) because the strings were threaded and rethreaded through itself. Motifs of those reliefs were taken from Roman art; sometimes figures from the Bible appeared alongside this decoration, like "relief in Holy Nedjeljica" in Zadar, and then they were subdued by their pattern. This also happened to engravings in early Croatian script – Glagolitic. Soon, the Glagolitic writings were replaced with Latin on altar rails and architraves of old-Croatian churches.