I am having a few shoulder issues and considering changing from a conventional mouse to a track ball type. Does anyone have a recommendation or any feedback at all ? Thank you.

I am archiving a project from V15 (brought up from V13 some time ago) and am unable to identify one of the Missing Attributes. Does the attached Missing Attribute look familiar to anybody? I have checked the Textures & Materials in the Attributes Man...

I have several archived projects that were initially created in AC 10. Opened and worked on in AC 15 and saved as AC 15 files. I now need to open the same projects and complete renovation & extension work. Do I open in AC 17 ? More generally what is ...