Use the arrow keys to move between entries, Enter to open one. On small screens the graph is shown as a list.
Drag to pan, scroll to zoom, drag a node to nudge it. Arrow keys move between entries; Enter opens one.
Arrow keys move along and between branches, Enter opens an entry or filters to a category. On small screens the tree is shown as a list.
One branch per category, most-connected entries nearest the root. Filled nodes are evergreen, half nodes growing, outlined nodes seedlings. Hover or focus a node to see its cross-links. Scroll to zoom, drag to pan.
Left and right arrow keys turn the page. Home jumps to the cover, End to the last page.
Left/right arrow keys or the edge buttons turn the page. Home, or the Cover button, jumps to the cover; End jumps to the last page. Each entry page has a bookmark toggle; saved bookmarks are listed on the contents page.