Revert "Additional comments."

This reverts commit a1fa47ee3ab4eedfc378469e8ae021aaf65a5d64.
Revert "SoFunction optimization"

This reverts commit d62fd7bada405413b5c4504948f2fc2f5ce716fd.
Revert "Revert "Additional comments.""

This reverts commit b42b5b4cc487e55c23572a3cef0ff2a4b119060f.