This free pack is a complete schematic example for learning source-to-diagram editing. It has not been test-tatted and is not a validated bookmark pattern.
Open Twin-Leaf-Bookmark.json in any text editor. It lists four units: R1, CH1, R2 and CH2. R2 joins R1.B. Open the included HTML booklet or PDF to compare instructions with the SVG.
NerthaLace can perform the synchronized diagram and booklet update when the project JSON is opened in the paid editor. This free pack is useful on its own for reading and annotating the original source and outputs.