A link could only be removed through the menu of its port, and the line itself took no input. A transition of a state machine could only be deleted in the list of the inspector. Now the line is the handle, in a behavior's graph and between states alike. - A click on a line selects that link and draws a halo behind it. A press counts within 6 screen pixels of the line, and where two cross the one drawn last wins. - Ctrl-click or Shift-click adds a link or takes it away. The rubber band takes every line it crosses, into the same selection as the nodes and boxes it caught. - Delete or Backspace removes what is picked as one undo step. A right-click on a line offers Hide link and Delete link. - The inspector shows a picked link: the node and port at each end and the type it carries, with Hide link and Delete link below. For several it says how many. - The arrow of a transition is picked the same way, on its name too. Delete or a right-click with Delete transition removes it. - The menu of a port is unchanged, Disconnect included, as answered in the issue. - editor/graph/edgeHit.ts holds the hit test as pure functions, and editor/inspector/edgeSection.ts builds the section. The selection has a new kind edge, and node and annotation carry edgeIds. Decided here: - A hidden link has no line and is never picked this way, also while it is shown on loan. Its mark at the port stays its handle. - The menu of a line speaks about the whole selection, like the menu of a box. With nodes or boxes held alongside it reads Delete N items. - Hiding picked links lets go of them, since no line is left. - A link wins over the box it crosses, and a mark wins over a link. - A transition has no Hide entry. - With nodes or boxes in the selection the inspector keeps showing the node or box, not the link. Tests: - Gate: 201 files, 2982 tests (2967 + 15), exit 0 - e2e, full run: 1635 checks passed (1629 + 6), exit 0 - Smokes: 24 / 19 / 21, exit 0 - The full run was done for exactly this state. - 15 unit tests in tests/editor/edge-selection.test.ts - Six e2e checks with a real mouse, block 6z-xi in module 06 and 26e7 in module 26 - 12 unit counter-probes all fail tests, run on stein2 - Three browser counter-probes fail, the build went through each time: no hit on the line, no halo, a band that skips lines - Screenshots of a picked link and a picked transition looked at before the last build, none after it Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>