Selection Filter lets you apply a filter to your cursor, ensuring you only select the intended elements. This eliminates the need for constant vigilance when selecting multiple elements in a busy area.

You can use multiple elements to define your filter.

For instance, if you want to limit your selection to Air Terminals and Mechanical Equipment, select an element corresponding to each, then filter by Category. This ensures that only those Categories can be selected until you confirm or cancel the command. 

The same applies to the 'Ignore' feature; in this case, the selected Categories will be excluded from the selection process.

You can filter by:

• Category
• Family
• Type

For more information, please refer to the Help Document.