If you are happy with this structure, Save it to a File . The structure file is saved with the .HIN extension that only HyperChem reads. The Select tool is the second tool from the left. The Select tool is used to perform some operation on one of several molecules on the screen or one part of a molecule. Use the select tool, for example, to set desired angle and bond length constrains before building, for selecting angles and bonds to be listed out in the dialog box at the bottom of the screen.
Some examples follow.
Click and drag over an angle in the molecular framework to readout the bond angle value on the bottom dialog box. The Click-Draw technique is another useful shortcut. This is an easy way to change the stereochemistry of a group about an atom. Pick the Draw tool , and press and hold the Shift key while using the left mouse button to click on the atom about which the flip should occur. Try changing the position of the methyl group in methylcyclohexane from exo to endo using this shortcut.