Practical information

Before you read through the following subsections, you should be aware of the following facts:

• In most macro screens the <description> element contains more than one descriptor. (Remember that the Field Counts and OIA descriptor can include up to three independent descriptors. See Field Counts and OIA descriptor.)
• The default settings in the Description tab are that all descriptors are required (the Optional setting of each descriptor is false) and that the default combining rule is used.
• The most common scenario that you will encounter is that all descriptors are required. (That is, if you have defined three descriptors, you want all three of them to be true in order for the macro screen to be recognized.) If you are facing this scenario, then you should use the default settings.
• If you are faced with a scenario that is more complicated than the default scenario, then you should use the uselogic method.