IBM Magstar 3494 „6… Non-Sizeable Window Border, „7… Dialog or Message Box, „9… Push buttons

unshaded part of the scroll bar) shows the position and the size of the visible information in relation to the information that is available. As the window is scrolled, the upper and lower bold bars change size to re¯ect the amount of information that is available for display in both up and down directions. All available information is visible if no slider box is shown.

„6… Non-Sizeable Window Border

A non-sizeable window border cannot be used to increase or decrease the size of the window.

„7… Dialog or Message Box

Dialog and message boxes are displayed when the application needs additional information, or when information is presented to the operator. Dialog and message boxes can also include radio buttons, check boxes, and push-buttons to allow the operator to respond to an application.

„8… Horizontal Scroll Bar

The scroll bars are used to move additional, unseen information into view on the screen. By clicking on the left or the right scroll bar arrows, current information can be scrolled (moved) horizontally off the screen and new information scrolled horizontally on to the screen. The bold (dark colored) portions of the scroll bars show whether, and how much, information is available to be displayed. Typically, these areas are not bold. They are of a lighter color than the slider box. As the window is scrolled, the left and the right bold bars change size to re¯ect the amount of information that is available for display in both directions.

„9… Push buttons

Push buttons allow the operator to select a particular action, which occurs immediately. The ellipsis (...) following a menu item indicates that a pop-up window will be opened if that item is selected.

„10… Check Boxes

A check box is a two-part control consisting of a square box and text. Unlike radio buttons, one or more boxes can be selected. To select a check box, place the pointing device on the box and click. The box is marked with an X to show that it was selected. Click on the text again to cancel the choice.

„11… Radio Buttons

Radio buttons allow the operator to choose between two or more possible responses or actions. Only one choice is allowed within any set of radio buttons. If a second choice is made, the ®rst choice is cancelled. The action selected by the radio button typically occurs after all screen selections are made and a push-button is selected to initiate the actions.

„12… Pull-Down Menu

Pull-down menus are an expansion of an action bar item. The pull-down is displayed when the corresponding action bar item is selected. The ellipsis (...) following a menu item indicates that a pop-up window will be opened if that item is selected. A right-pointing triangle (Ê) at the right of a selection item indicates that this selection has an associated hidden pull-down that will be displayed if the item is selected.

Click on the desired action to highlight the item. If a line item is reduced in contrast (dimmer) from other items (Action 2 in Figure 36 on page 89), the item is not available for selection.

Chapter 6. Advanced Operating Procedures 91