This dialog box lets you configure the tabs in the Contents Window. You can reorder the settings and/or hide individual tabs which are of no interest to you.
"I have a confession to make. I'm a vi user. I've tried other programmers editors
but my fingers just could not make the switch. All the text editors I tried
forced me to learn all new commands...Then I found CRiSP. I was saved, it has a
wonderful vi emulation mode.