Definition
A command field is an area in which buttons to control a digital object may be positioned.
Use
Command fields are used to allow operators to control digital objects simply by clicking a button with the name of the appropriate command. A command field can also show the current state of the object. The advantage is that the operator can view the current state and all commands available at one glance.
Example
For an example of a typical command field, click the button below.
Alternatives to command fields
The most useful alternative to a command field is a combo box which allow you to show all commands in a drop-down list. Compared to the command field you save space on the diagram, because only one command can be visible at a time.
For further information about combo boxes, click See Also.