filtercomb

5reg

filtercomb

A logical combination surface filter

Content Model
    filtercomb ::= (&xml-tag;*,
                    &packetsyn1;
                    &packetsyn2;
                    &packetsyn3;
                    &packetsyn4;
                    &packetsyn5;*)
Attributes
Name | Type
`op` | `CDATA` (required)
&packetattrlist2col;

&eltaddedver;7.0

## Description

This represents a combination filter packet, one of the many types of packet that together form the packet tree that a user sees when they open a ®ina; data file, and also one of the different types of filter that users can create to refine a set of normal surfaces.

A combination filter uses a logical operation to combine other normal surface filters into a single more complex surface filter.

The filters being combined must be immediate children of this filter in the packet tree. The logical operation that combines them is stored in the `op` attribute. (This attribute replaces the deprecated &xml-op; element, which was used with &xml-filter; in older versions of ®ina;.)

&packetchilddesc;

### Parents

&packetparents;

### Children

Element `filtercomb` has no children that are specific to combination filters.

&packetchildren;

## Attributes

The following attributes are specific to combination filters:

`op`

- Represents the logical operation used to combine the child filters. This must be either `and` or `or`.

&packetattrdesc;