The conic command produces a space-filling rendering of the displayed molecule(s). The current orientation and coloring are retained. Each atom is depicted as a sphere of the appropriate radius with realistic highlighting and shadowing effects. This image is not interactive and can take anywhere from a few seconds to a few minutes to produce. Clicking the left button returns to interactive graphics.
The conic command is actually an alias that uses pdbrun to send data to the outside program conic. There are many options, which are detailed in the conic manual page.