Custom labelling is very powerful in Gretep. You can define windows fonts, change the name of the label, the save the orientation and label information as part of the Gretep file.

In the February 2001 version of Gretep, you can also include symmetry operators as part of the atom labelling process so it is obvious how the atoms are related to each other.

First open the structure of interest and obtain the view of interest.

Select the Labels Off Centre option to bring up a set of labelling options. The centred labels will be drawn (so they are identified) but excess centred labels can easily be deleted later using the Delete all centred labels option.

Now select the Write a Label Off Centre option.

An Add the position code option will now appear. Select Yes to add symmetry operator information to the atom labels.

Now (you may find you need to re-optimise the view, scaling or font now point and click to add Atom Labels