# Navigating a Filtered Toplogy

If you specify filtering for a blob scene description, then only those features that meet the filtering criteria are visible. As you request child or sibling features, only those features that meet the criteria are returned by the tool.

You can override the filtering when looking at a blob's children by using the filter argument. This allows you to filter blobs, then get detailed, unfiltered information about the features within the blob.

The sort order in effect for a blob scene description affects the order in which child and sibling blobs are returned.