As a designer you may always heard that in a project team.
1. Hold [shift] + right click.
This shortcut key combination will display context menu for snap overrides really quickly. Try to hold [shift] then right click. Release, then press [E] to activate end point snap.
2. Hold [shift] for temporary ortho mode
Holding this key while you draw, will activate temporary ortho mode. Exactly like when you activate ortho mode by pressing [F8]. But this is just temporary.
3. Holding [shift] while chamfering and filleting
You know what will happen if we hold this shortcut key when we use chamfer or fillet? It will override the distance or radius value, and will use 0 (zero) value! Pretty nice.
4. Holding [shift] while using trim/extend
When we use trim, sometimes we want to extend other objects to the same reference. You don’t have to finish your trim session, and activate extend to do it. Just hold [shift], then trim will be inverted to extend command. This work on the other way when extend command is active, it becomes trim! This is really a practical method worth to know.