In order to maintain a standard appearance and form of control across all versions of Pergamon, and on all Operating Systems, the Toolbar was created with a specific appearance and means of control.

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Group Titles are displayed in a title bar beneath a consecutive set of icons. Usually, group titles are not required and all information required for an icon is displayed within the graphic appearance and the simple icon label.

In some cases however, similar toolbar icons may exist for different purposes - for example on the Readers dialog there are [Create] and [Update] icons for both Readers and Contacts. In order to assist the user in ensuring that the correct toolbar icon is being selected, the Group Title appears across all of the associated icons.

Depending upon which function is currently in use within a Dialog, some toolbar icons may 'ghost' to indicate that they are not in use, or in fact disappear altogether. This latter mechanism is used extensively when the dialog may run out of display space.

An example of this mechanism can be seen in the Readers Dialog where sets of toolbar icons disappear based upon whether the user is editing a Reader or a Contact,

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