Appendix A. Reference material

A.1. About MTA issue icons

In the Issue Explorer and file editors, MTA issues use an icon to indicate their severity level and status. The following table describes the meaning of the various icons.

Table A.1. MTA issue icons
Icon	Description
	The issue is mandatory to fix for a successful migration.
	The issue is optional to fix for migration.
	The issue may potentially be an issue during migration.
	The issue has been resolved.
	The issue is stale because the code marked as an issue has been modified since the last time that MTA was run on the project.
	A quick fix is available for this issue, which is mandatory to fix for a successful migration.
	A quick fix is available for this issue, which is optional to fix for migration.
	A quick fix is available for this issue, which may potentially be an issue during migration.