Distances and angles in Jmol models are easily determined. To measure a distance, double-click on two atoms. To measure a bond angle, do a double-click, single-click, double-click on three atoms. To measure a torsion angle, do a double-click, single-click, single-click, double-click on four atoms. Distances are given in nanometers. A pop-up menu of commands may be accessed by clicking the right button on a PC or a control-click on a Mac while the cursor is inside the display frame.