Opening File In First Tab

When I open a sql file (Ctrl+O) and there are no tabs open, it opens it in the first tab. I then can not close the file after I have run it. The only way I can find to close the file is to close and then re-open Heidi.

If possible, it would be nice to open files in a new tab, or have some way to close the sql file.

You can press Ctrl+W to clear the tabs content, or doubleclick the tab to do the same.