Improved the coord displays

LAYOUT.md

@@ -0,0 +1,42 @@
+## default Mode
+
+### File
+- New: `CmdOrCtrl+N`
+- Open: `CmdOrCtrl+O`
+- Save: `CmdOrCtrl+S`
+
+### Edit
+- Insert: `I`
+- Copy: `CmdOrCtrl+C`
+- Paste: `CmdOrCtrl+V`
+- Undo: `CmdOrCtrl+Z`
+- Delete: `Backspace`
+- Move Up: `Up`
+- Move Down: `Down`
+- Move Left: `Left`
+- Move Right: `Right`
+- Deselect: `Esc`
+
+### Stroke
+- Line: `A`
+- Arc: `S`
+- Arc Rev: `D`
+- Bezier: `F`
+- Connect: `Z`
+
+### Effect
+- Thicker: `}`
+- Thinner: `{`
+- Thicker +5: `]`
+- Thinner -5: `[`
+- Linecap: `Y`
+- Mirror: `Space`
+- Fill: `G`
+
+### View
+- Tools: `U`
+- Grid: `H`
+- Control Points: `J`
+- Expert Mode: `:`
+
+