Using the Select tool

In the example below, a Mesh Block is created to a size of 50 x 40 x 80.

The Select tool is used to select the vertices shown below left. This is done using a by holding down the SHIFT keyboard key and creating a series of left-to-right window selections.

When the vertices are selected, shown below left, a single vertex can be used to change the shape of the top edge. In this example, the top middle vertex is moved so that it is connected to the corresponding vertex on the edge below.

Select the vertices to manipulate the top edge