Definitions->Custom Views and Report Filters
Custom Views and Report Filters are related only to the Overview Window and pertain only to the Color, Fonts and Images areas. Each of these areas has a popup menu that is built dynamically for each file that has been preflighted. The items listed in the popup menus allow you to filter out items you may not be interested in. Selecting a filter in the popup menu changes what you see on screen and also changes what gets saved or printed when you create a report with the Overview Window as the front most Window.
Following are 4 screenshots showing how this works under the Color area:
Showing Used Colors is the default condition and filter when you preflight a document.
Clicking on the popup menu shows you all of the filters available for the currently open job. This list is built dynamically every time you preflight a file and the contents depend on what was detected in the job.
Here, Spot Color has been selected as the filter. This spot color has not actually been used in the job, but is in the palette for the job. If a spot color has been used in a job then the you should see a filter named Used Spot Color.
Here, colors are used in drop shadows in this InDesign CS2 document.