How can I create an .info file?

[^Dagon^]

I want to create an .info file for a file that doesn't have one but I don't know how. I tried to copy another .info file and rename it, but it changed the display of the file I was interested in.
 
Any ideas?

[^Dagon^]

Many of the above ways work and I would like to thank you for your help.
 
But if I want to keep the file's display image (it does have one, even though it lacks an .info file), is there a way to extract it from the file and use it in an .info file?

[^Dagon^]

Ok, I found what I wanted just a few minutes after my second post. It was Cammy's advice what I was looking for. As I can understand from the other posts, the file was displayed with a default icon since it didn't have an accompanying .info file. All I wanted was to make an .info file with the default icon so as I could customize the place where the file appeared and make it permanent with a snapshot.
 
I am new to Amiga OS but I am learning fast.
 
Have a nice day!