Shows you the variables currently available. Each different variable type local, static, privates and publics may be toggled on or off with a simple keystroke. Alt-L for locals, Alt-S for statics, Alt-P for publics and Alt-V for privates.
The first level of arrays are shown, character strings can be shown in Hexadecimal, string lengths are shown, variables passed by reference can be viewed/edited. Local variable that have not been used may be shown and variables that have been changed during the last step can be highlighted.