In the button bar of the 3D Mechanics Editor you will find the View Mode buttons. You can select them to select different views.
3D View |
Default view. |
|
X-Y plane |
View perpendicular to the x-y plane. You can only move objects along the x-y plane. |
|
X-Z plane |
View perpendicular to the x-z plane. You can only move objects along the x-z plane. |
|
Y-Z plane |
View perpendicular to the y-z plane. You can only move objects along the y-z plane. |
|
All |
A combination of the all the views. |