There are situations when the 3D model given to projection map has distinct differences from the real world object. If this is the case you will need to edit the mesh to match the real world object.
To enter Mesh Edit mode,
Goto Layout -> Mesh Edit or Right click on the model to be edited and choose Mesh Edit.
| Vertexes Unselected | Vertexes Selected |
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- Select individual vertexes left click on them.
- Select/Unselect multiple individual vertexes hold ctrl and left click.
- Select a large group of vertexes, hold shift, left click and drag box around them.
- Unselect a large group of vertexes, hold shift + alt, left click and drag box around them.
- Unselect all vertexes press ESC.
If a single vertex is selected then you can use the the translate (E) mode to move it around. If multiple vertexs are selected then all three manipulation modes translate (‘E’), rotate (‘R’) , scale (‘T’) are available. The vertexes will rotate and scale around the centre of the selection.
There are 2 selection modes, 
visible and 
all. If set to visible you can only select vertexes you can see. If set to all, you can select vertexes you cannot see right through an object.
Rendering
Vertex Rendering is on by default but if your model looks too busy by this you can right click and untick vertexes to make the model cleaner as you edit it.
Normals
Normals are not shown by default but if you need to check your normals right click and choose normals vertex, face or none. You cannot edit your normals in mesh edit.
Statistics
- Vertexes: How many vertexes does the selected object have.
- Faces: How many faces does the selected object have.
Selection
- Selected number of Vertexes: The number of Vertexes currently selected.
- Index of first selected Vertex: This is the index number of the first selected vertex, this is needed when working with Blacktrax link.
- Model Location: Vertex location from the origin of the model.
- World Location: Vertex location measured in world space.
To exit Mesh Edit tool either go to Layout-> Home, left click on the 
home button, or right click in the scene and select home.