DTS Catalog Peek is a sample program that illustrates how to use the Catalog Browser Panel in a normal application.
When you select a record from the browser panel, the Attribute types defined for that record are displayed in the upper list. You can then select an attribute type, and attribute values for that type are displayed in the second list. If you select an attribute value and chose the "Show Entity Data" radio button, the contents are displayed at the bottom of the window.
Recoverable error status is logged in the window, along with the name of the function that returned the error. Serious errors (such as memory manager failures) are displayed in an Alert. You probably need to follow the source code to understand where the error comes from.
You can use Balloon help to get help on menu items and window content. "About DTS Catalog Peek" brings up a commented display that may explain things.
This tool is provided as part of the AOCE SDK. Use of this tool for any purpose other than the development of AOCE-based Macintosh® products is a violation of the license agreement covering this SDK.