How to open only one script in MonoDevelop-Unity??

Noob question, everytime i click one script from Unity Mono it open all my scripts in tab form (now i have like 20 for my project).

i just want to open the script i clicked… then only if i want i may add another script tab using the left windows menu.

Where can i set that?

Thanks!

You can close the existing tabs either individually, or all at once by using Window → Close All.