Each file in a different window

For several days I have a problem that every dwg file opens in a new window, not a tab. I can't find how to change it.

Comments

  • This sounds like your "single-document interface" setting was changed.
  • This sounds like your "single-document interface" setting was changed.

    Where can i check it?
  • It's the SDI variable (Single-document interface), to check it you can type it in the command line or find it in the Settings dialog. Value 0 - Multiple-drawing interface, 1- Single-drawing interface.
  • It's the SDI variable (Single-document interface), to check it you can type it in the command line or find it in the Settings dialog. Value 0 - Multiple-drawing interface, 1- Single-drawing interface.

    Thank you. Problem is solved