There are four switches in the View menu that control the discretization visibility level: Mesh, Domains, Breaking, and Spacing. When all these switches are off, QuickField displays blocks without discretization. This mode is the most convenient when you describe the geometry and assign labels to objects. When the Spacing switch is on, QuickField draws the circles with corresponding radiuses around the vertices where the spacing values have been set manually.
When the Breaking switch is on, the ends of the elements are indicated with tic marks along the edges. It is convenient to switch both Spacing and Breaking on while setting the mesh spacing values. Turn the Mesh switch on to view the mesh building process. In the end you will see the complete triangular mesh. If the Domains switch is on and the Mesh switch is off, QuickField displays the subdomains prepared for triangulation by the geometric decomposition process.