For example in the Related Objects tab of an article in the "described by" table or in the search result table a column with the format icon of the primary content format is shown (e.g. pdf, dxf, xls...).
Often an article has a lot of linked documents with the same document subtype but with different primary contents. In the collector tables you can not distinguish the documents because they have all the same subtype symbol. The format icon from the primary content is missing.
Please add a column to the collector tables which shows the format icons of documents.