This is a filter option to exclude document line items which are blank.

For example, I have 100 documents and 50 have no Document Number, so i would like a filter syntax option to prevent the display of documents which have no number.

This filter can also filter any kind of attribute that is empty.

There would also be filters for yes/no, true/false, 0/1, a maximum or minimum number of characters, or a specified value range.

RegEx could be an option as well.

Attached is an example of how I would like to filter blank Document Number fields, and only see documents which have a number in the attribute.