Drag a unit onto the map. Click one to drop it at screen center. Drag a placed unit to move it.
Game default (cg_fov) is 80, measured horizontally at 4:3. The same setting is about 97 on a 16:9 screen. Cones stop at walls, so windows and gaps let sight through. The 3D shape also stops at floors, ceilings and anything overhead, and assumes a level view with a vertical angle worked out for 4:3 (about 64 for an 80 FOV).
Draw
Turn Draw on, then drag on the map surface with the left button. Right-drag still looks around. Press B to toggle.
WASD move · Space/E up · Q/C down · Shift fast Drag or right-click drag look · Wheel turns a selected unit · F focus · Del remove · Wheel speed · R reset view