New Code Sample - The Error Checker
James MacKay has submitted a NEW CODE SAMPLE to the ArcGIS Engine .NET Code Gallery called the Error Checker. This handy little snippet is a utility that takes an input decimal or hexadecimal error code and gives you a list of all potential enumeration values.
The download comes with documentation that goes into more detail of course, but this sweet workflow graphic should explain the utility’s ease of use:

If there was only a better way to annotate screen grabs .....