This figure shows an example release number: 12.2.1.0.0
Each of the 5 period-separated numbers in the release number is labeled as follows:
The first two numbers (12.2) are labeled "Major release number"
The third number (1) is labeled "Minor release number"
The fourth number (0) is labeled "Patch Set release number"
The fifth number (0) is labeled "Patch Set update release number"