The versioning system in Laserfiche is simply a sequential collection of documents.  You can use the version comments to indicate when you have reached any relevant milestones.

Something I do is to also include a list field for the current "state" of the document. So in addition to using the version comments for greater detail as Brian suggested, you could have Draft, Major, and Minor, as options in a list type field and the user could set the appropriate value whenever changes are made.

Hi

You can add version comments yes.

A way I think you could use "Custom Versioning" is by making a SQL table with an integer.

Use that value with a workflow to populate a field on your template and give it basically any value you want starting from anywhere and accumulate with any size.

If you know how to do that with SQL - I think you could perhaps create something cool for yourself!

Hope I gave you an idea!