-These platforms should only be considered weakly supported, as they are either experimental or not actively
-tested. These platforms have usually been tested in the past, but they may or may not be in a useful state.
-Bugs for tier 3 architectures should have patches attached.
-
-* Solaris 10 and above (sparc64)
-* Old operating system versions of tier 2 and above platforms
-
-## Tier 4
-
-Platforms that are tier 4 are not supported at all. They include all platforms not included in tier 3 or
-above. Bugs to tier 4 platforms **must** have patches attached or will be rejected, possibly without comment.