The guipref1.gif image shows the windows dialog box titled Environment which contains three panes and two buttons. The three panes are labelled:

• Set Options:

• Value:

• Screen Buffer:

The Set Options pane contains a scrollable text selection box containing a list of options to choose from. The arraysize option is selected. A text callout from the selection box contains the following: "Choose one of these options".

The Value area contains two groups of two radio buttons and a numeric input field. The radio buttons in the first group are labelled:

• Default

• Custom

Default is selected. A text callout from the Default label contains the following: "Click the default radio button to use the default value". The radio buttons in the second group are labelled:

• On

• Off

Both are greyed out and unavailable. A text callout from the On/Off labels contains the following: "Because arraysize is a numeric value, these buttons are not available".

The numeric input field contains the value 15, but is greyed out and unavailable. A text callout from the numeric input field contains the following: "Because default is chosen, the text box shows the default value. The default setting cannot be changed".

The Screen Buffer pane contains two numeric input fields labelled:

• Buffer Width: with a value of 100

• Buffer Length: with value of 1000

The two buttons are labelled:

• OK

• Cancel