The Zoom command is used to zoom a particular window to full size.

Syntax:

> Zoom [ Source  ]
       [ Display ]
       [ Output  ]

The Zoom command without any argument zooms the Output window.  A zoomed
window expands to the whole screen minus the 2-line command window.

The cursor up/down, F2 (page up), and F3 (page down) can be used to position 
in the window to view the content.  ESC will cause the command to exit.

While in the Source window, a "-->" will indicate the current source line,
"==>" will indicate the current execution line, and "**>" will indicate when
both are the same.

                            << end of help >>

