Any file can contain summary information, which can be viewed/edited with the Windows Explorer file properties dialog, displayed below:

 

 

Note: Displayed is the Simple mode of this dialog which shows the summary values that are provided for all file types.  An Advanced mode is typically available as well, which provides access to values specific to a specific file type (and where custom values can be defined as well).

 

Ultra Recall supports capturing of summary information for text and attribute values when importing documents.

 

Note: Available in Professional edition only.