[plt-scheme] Description of DrScheme tools?

Hi,

can someone point me to a description of the standard tools included
in DrScheme?
I've seen it in the docs before, but can't find it know.

Algol 60
Browser
Check Syntax
DeinProgram
Essentials of Programming Languages
FrTime Language
Graphical Debugger
How to Design Programs
Macro Stepper
Slideshow
Swindle
Test Box Recovery
Test Engine
Text Box
The Stepper
Version

I'm looking for a one-line description in order to decide whether to
disable them.

Thanks in advance