@for (connection of connections(); track connection.id) {
} @for (node of nodes(); track node.id) {
}
Click the canvas (or Tab to it), then: arrows — select the nearest node (Shift extends the
selection), Ctrl + arrow — follow a connection, hold Space + arrows — move (release to drop), C —
connect, Delete — remove, +/−/0 — zoom, Escape — clear.