Key
W : toggle wireframe
F : switch to Face mode
E : switch to Edge mode
P : switch to Point mode
1 : translate
2 : rotate
3 : scale
L : toggle local/global axes
Z : zoom/focus

Mouse
right click : select face


Demo of MeshEditor for Babylonjs

For more information and source code head on over to
https://github.com/ssatguru/BabylonJS-MeshEditor