(a) A screenshot from CCP4mg showing a molecule of xylanase and bound inhibitors (Gloster et al., 2003). Creating a picture such as this within CCP4mg is straightforward and the display table GUI which controls the display is shown in (b). The table lists the data objects (the model, 1od8
, a vector object which provides the three-dimensional labelling on the model and a two-dimensional legend). Each data object has one or more display objects that is some selected portion of the data object displayed in a selected style. The buttons and sliders etc. associated with each display object allow the user to change the appearance of the display object.