Please Explain the new File Exchange Versioning Number

The new File Exchange versioning uses four numbers. Please explain what each number represents. For example, 2.1.4.2.

Answer 1

[Walter Roberson]

They mean whatever the author wants them to mean.

one source hints major.minor.patch.build

The article at https://en.wikipedia.org/wiki/Software_versioning suggests that 3 levels are common, major.minor.patch .

If your own tracking uses fewer than 4 components, you can always use 0 for the trailing components.