MIL-DTL-87268D
slider. For example, in a text data pane, if the slider of a vertical scroll bar moves up, a text display shall
move down as previous lines in the information appear at the top of the data pane (see igure 2).
3.4.1.2.4.2 Window control options. If speciied by the acquiring activity (see 6.2p), additional window
controls shall be included as described below.
3.4.1.2.4.2.1 Window resize and relocation. The window resize function shall allow adjustment of individual
window location and physical display size. Initially, resizable windows shall be displayed at the default size
indicated for that display. The capability to alter the size of the active window shall be available at any
time during the presentation. The control mechanism for the resize function shall be located inside the
window frame on one or more corners of the frame. Any resizable window shall have a distinctive border
or consistent indicator which signiies that it can be resized. When the window is resized, the amount of
information it contains shall increase or decrease i.e., more of the text or graphic is shown when the
window is enlarged. It shall not simply be rescaled. When changing the size of the window is not
permitted, the resize border shall not be included as one of the window components.
3.4.1.2.4.2.2 Window menu button. A window menu button shall be located in the upper left corner of the
title bar and shall be used to activate the window menu (see igure 2).
3.4.1.3 Menu system. The user shall be given the capability to access all of the functions available on the
system through hard keys, a footer bar, or a menu system. The menu system shall consist of a menu bar
which shall control a hierarchy of pull-down menus and a set of pop-up menus. The window menu shall
provide the standard location for window management functions (see igure 2).
3.4.1.3.1 Pull-down. Pull-down menus shall be displayed as a vertical column of selectable items. When
active, titles on the menu bar of available pull-down menus shall always be visible to the user.
3.4.1.3.2 Pop-up. Pop-up menus shall be displayed as vertical columns of selectable items. Pop-up
menus shall appear adjacent to the selectable item.
3.4.1.3.3 Cascading. Cascading menus or sub-menus shall be used to add detail to pull-down and pop-up
menus. Cascading menus shall provide a tree-like structure for organizing information. If required, menu
sub-functions shall appear and more selections shall be provided to the user.
3.4.1.3.4 Presentation details. Menus shall appear quickly and exist only while a selection is being made.
Menu items shall be displayed in uppercase and lowercase characters. The user shall not be given the
capability to interact with any other part of the data until the menu is removed. The user shall be given the
capability to select or activate the menu item with the cursor or pointer. The user shall be allowed to exit
any menu by activating the CANCEL function.
3.4.1.3.4.1 Width. The minimum menu column width shall be no less than
ive text characters. Menu
columns shall be wide enough to enclose all menu item labels or options so
that no option is truncated.
Whenever an individual menu item is too wide for display in the client area, it
shall wrap to the next line. If
the entire menu cannot be presented within the client area, hidden menu data
shall be indicated to the user.
3.4.1.3.4.2 Height. The minimum menu height shall be the height of two menu items, i.e., the menu title
plus at least one menu item. The maximum displayed menu height shall be the height of the client area.
Fonts and font sizes, line spacing between menu items, and allowable margins between menu items shall
conform to the requirements for the display and selection of text (see 3.4.2).
3.4.1.3.4.3 Border. The menu shall be drawn with a boundary extending beyond the menu cells.
3.4.1.3.4.4 Highlighting. Highlighting shall be used to indicate the cursor is on a selectable menu item.
Reverse video (or similar brightness coding) shall be used to highlight the menu item after the item is selected.
3.4.1.3.4.5 De-emphasis. The system shall gray-out or dim menu selections which are unavailable. The user
shall not have the capability to display a menu when all selections are unavailable.
3.4.1.3.4.6 Organization of selections. Selections shall be grouped functionally or by frequency of use,
alphabetically, or by some other clearly understood organizational scheme. Commands that change system
status or enter other input and cannot be reversed shall not be displayed next to frequently chosen selections.
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