Planarmap.js editor

Drag
Pan or drag vertex
Mousewheel
Zoom
Click
Select
Shift-Click
Select more
Arrows
Move corner selection
Ctrl+Z
Undo
Delete
Delete edge/face
E
Create edge

S
Split vertex or edge

C
Contract edge
G
Glue edges
2-9
Insert face of that degree
M
Toggle marker
F/R
Fix/release node position
D
Draw dual map