How to prevent the open command from starting another instance of autocad

[robertVZLY9]

I would like all my drawings to open in the same instance of AutoCAD (if possible), now by default the open is a start AutoCAD command.

I forgot how to stop the AutoCAD "open" command from starting AutoCAD in another instance of AutoCAD every time I open a drawing. If I'm not paying attention there will be 5 instances of AutoCAD running sometimes with the same drawing open in several instances not good. but funny lol.

Thanks in advance, 

Rob

[Patchy · Accepted solution]

https://fissupport.ipf.msu.edu/kb/a92/how-to-make-autocad-open-a-new-instance-of-autocad-not-a-new-t...