MIL-DTL-87268D
i. Margins shall be at least one character width around any image.
3.5.1.3 Footer bar (function designation area). Unless another location within the window is speciied
by the acquiring activity (see 6.2r), the footer bar shall be located at the bottom of the window frame
within the client area. All active selectable options i.e., available interaction functions shall be displayed
in the footer bar area. Footer information shall be displayed in a region that is at least two character
cell heights tall and as wide as the window. The footer bar shall be used in conjunction with the
menu bar to display interaction options to the user.
3.5.1.3.1 Support of function keys. The footer bar shall support delivery devices which use programmable
or dedicated function keys. The footer bar shall provide a cue that particular functions are assigned to physical
keys and that those keys are active. It shall also support interfaces that use the marked region in the footer
bar as an active function selection or button area. Active function selection areas of the frame shall only be
in the footer bar area, unless a dialog box or other active window is superimposed on the frame. Inactive
functions for the displayed window shall be visually distinguishable from active functions or not displayed.
3.5.1.3.2 Visual prompts. Selectable options shall be indicated using function name, icons, programmable
function key labels, e.g., F2, or other visual prompts and shall be enclosed in a box outlined with a visual
border, e.g., line, shadowed button image, in the footer bar area. Icons with no label shall be included
without the surrounding border. Visual prompts shall be lined up horizontally.
3.5.1.3.3 Visual prompt labels. When a software function is assigned to a particular function key, a label
containing the hard key function label or the programmable function key number (such as "F8") along with
a succinct description of the function shall be displayed in the footer bar area. The same function shall
appear in the same region of the footer bar even if this requirement calls for blank space to be reserved in
the bar when a particular function is not active.
3.5.1.3.4 Menus. When required, footer bar menus shall be activated from the function designations in the
footer bar and shall be attached, e.g., pull-down, pop-up, in accordance with the formats described in 3.4.1.3.
3.5.1.4 Optional second header line. If speciied by the acquiring activity (see 6.2s), the top line in
the client area shall be reserved for additional header information. The format of this line shall be
compatible with the title bar. If the MENU function is used to toggle the title bar, the toggle shall
also apply to the second header line.
3.5.1.5 Optional message area. If speciied by the acquiring activity (see 6.2t), a message area shall be
reserved at the bottom of the client area above the footer bar. Requirements for messages to be displayed in
this area shall be as speciied by the acquiring activity.
3.5.1.6 Display requirements for WCN. WCN and their associated icons shall be prominently displayed and
shall be treated as an alert. The associated message shall appear in the approximate middle of the client
area. Normal operation of the system shall not resume until the message is acknowledged in accordance
with the requirements for an alert. Upon acknowledgment, the alert shall be eliminated and the procedural
information presented. Combinations of warnings, cautions, and notes, shall be displayed in that order.
3.5.1.6.1 Color display. Where color is used for display, message colors shall be red for warnings,
yellow for cautions, and cyan for notes.
3.5.1.6.2 Borders. Borders for warnings and cautions shall consist of diagonal bars, alternating between the
background color or white, and the designated message color. The appropriate word identifying the message
type shall appear in capital letters, horizontally and vertically centered on the upper border (see igure 6).
3.5.1.6.3 Icon and title. One or more icons representing a warning, caution, or note shall appear
in the footer bar.
a. Icons for hazardous materials shall be designed and used in accordance with the Aerospace
Industries Association Service Publications Committee PUBS 119 and MIL-STD-38784, Appendix
A.
b. An applicable icon shall remain displayed in the footer bar until the warning, caution, or note
message it represents is no longer applicable. The user shall be given the capability to
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