Is it possible to reset structure and pipe numbers in a drawing? I'm cleaning up our template and creating new styles and because of that, I'm drawing small pipe networks, tables, profiles, etc... in the template to get a quick overview of what works, what doesn't and what layers need to be changed. But after I delete the pipes and networks, when I place a new structure, it will say it's number 47 (or whatever the next number is). How do you reset that??