Ctrl+9 Zoom In
Ctrl+0 Zoom Out
Right Mouse Button and Drag Pan
Ctrl+A Select All Vertices In Current Segment
Ctrl+D Deselect All Currently Selected Vertices
Left Click And Drag Select Vertices in a specified region
Right Click on a vertex Use the list to select/deselect a specific vertex
Left Click on a vertex Select All Vertices lying on the point
Drag with Left Button Move selected vertices
Directional (Arrow) Keys