Tracker Actions?

I would like to see if I can use Tracker Reports to measure record exports by Users, but it doesn't seem possible. Are there other commands for Tracker Actions besides 'view' and 'save'?   

If not, is there a way to customize a Tracker report to measure exports by User? 

  • Te action field in trackers is a normal 255 chars text field.

    You can enter (e.g. by postman or a logic hook) any value you want.

    I did that with "export" and tried the report filter which works fine.