new connection editing

BEdit/README.md

@@ -110,17 +110,19 @@ BEdit document used as a copy source. The built-in example defines A, B, and C.
 - Components, interface terminals, and connections are selectable. Use a rubber
   band or Ctrl-click for multiple selection, Delete to remove items, and the
   standard Cut/Copy/Paste shortcuts to duplicate selected component groups.
-- Switch the graph header to **Connect**, choose Direct, Angled, or Spline, then
-  click an output and input. Angled connections accept intermediate corner
-  clicks, use right-angle segments, and snap to the graph snapping grid.
-  Right-click cancels an unfinished connection.
+- Switch the graph header to **Connect** and click two blocks or their temporary
+  port hints. A chooser lists every compatible output/input pairing in both
+  directions and preselects the pairing implied by the clicks. Empty-canvas
+  clicks add freely angled, grid-snapped vertices; right-click cancels.
 - Select a routed connection to reveal its draggable nodes. Right-click a line
-  to add a node, or right-click a node to delete it. Angled routes persist every
-  orthogonal corner as a draggable, grid-snapped node.
+  to add a node, or right-click a node to delete it. Visible wire endpoints are
+  projected onto each icon's hitbox where the ray from its center toward the
+  adjacent route point crosses the boundary. Hidden semantic port positions do
+  not constrain the wire.
 - Use **Box**, **Line**, and **Text** to add persistent graph annotations. Lines
-  share the Direct, Angled, and Spline routing controls. Annotation context menus
-  provide the same shape styling as the icon editor and can move annotations
-  through integer layers below or above graph layer 0.
+  use the same freely angled polyline and draggable-node behavior as connections.
+  Annotation context menus provide the same shape styling as the icon editor and
+  can move annotations through integer layers below or above graph layer 0.
 - Double-click a graph component or select it and use **Down** to open its owned
   subgraph; use **Up** to return.
 - Graph components show **Pointer**, **Input**, and **Output** tools. Select an