Better drawing and added more icons

BEdit/README.md

@@ -112,26 +112,36 @@ BEdit document used as a copy source. The built-in example defines A, B, and C.
   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; right-click cancels an unfinished connection.
-- Double-click a graph component to open its owned subgraph; use **Up** to return.
+  clicks, use right-angle segments, and snap to the graph snapping grid.
+  Right-click cancels an unfinished connection.
+- 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.
+- 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.
+- 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
   interface tool and click the canvas to add a visible internal terminal and a
   corresponding external block port. Interface terminals can be moved afterward.
 - Right-click a component on the canvas or in Current Document to edit its name,
   icon shape, icon text, fill color, and border color. The same dialog can hide
   that component's contained subtree from the Libraries tree.
+- The icon editor uses Pointer and click-drag drawing tools. Its toolbar and
+  mouse wheel provide zoom in, zoom out, and fit-to-canvas controls.
 - Double-click a text component to edit its input list, output list, and
   `implementation.source` JSON.
 - Right-click any graph component under Current Document to add nested graph or
   text blocks. Any current-document component can also be deleted there.
-- The active document hierarchy has its own Document panel; the Libraries panel
-  contains only configured external libraries.
-- Select one or more blocks and press `Ctrl+R`, or use the Transform toolbar, to
+- The left navigator presents the current Document and external Libraries as tabs.
+- Select one or more blocks and press `Ctrl+R`, or use **Rotate** in the graph header, to
   rotate them clockwise by 90 degrees. Rotation is saved and supports undo/redo.
   **Apply JSON** updates that source and participates in undo/redo.
 - File → Save writes the complete recursive document to JSON.
 - File → Close Document removes the active document and returns to an empty
-  workspace. An open graph uses a light gray, 32-unit dotted canvas.
+  workspace. An open graph uses a light gray grid whose visible and snapping
+  spacing are configured separately.
 - Edit → Settings → Libraries accepts document files or folders of JSON files.
 
 Every component owns its ports, declarative icon, properties, and child graph: