Complex sentence: It was through students of Liechtenauer, like Sigmund Ringeck, who transcribed the work into more understandable prose that the system became notably more codified and understandable.
Split into simpler sentences: It was through students of Liechtenauer, like Sigmund Ringeck, who transcribed the work into more understandable prose Ringeck, Sigmund. C 487 that the system became notably more codified and understandable.