undo functionality
alert dialog, eliminating using, 445
Backspace key as, 163-164
blind, 159
buffer, dedicating to, 164-165
category-specific, 163-164
comparison tool, using as, 163
confirmation dialog, eliminating using, 449, 450
disabling, 166
explanatory, 159, 161
exploration, encourages, 158, 159
file operation, 166, 168, 176, 177, 187
format operation, 164
global function, as, 159
graphics software, 159, 163, 164
incremental, 159, 164
LIFO order, 161
manifest model of, 161, 163, 165
multiple, 160-161, 162
procedural, 159
proof operation, 166
queue, displaying, 161
Recycle Bin, 449, 450
reversing using redo, 161, 162, 163
reversion to previous document version, 165, 168
selection-specific, 164
sessions, spanning multiple, 195
single, 160
TV remote control jump feature compared, 163
user failure signal, avoiding, 158
word processing software, 159
uninstallation process, 470-472
Unix, 271, 324, 331
upgrading software, 465, 470
Usability Engineering (Nielsen), 54
usability research, 504
use
case, 77
identifying necessary, 90
useit.com, 477
user. See also beginner user; behavior, user; persona
busy, as, 36
context, 46-47
demography, 47, 68
design process, integrating in, 9
designer, as, 51
designer as advocate for, 501
dialogue with artifact, 76
division of labor with computer, 191
domain expertise, 42, 47-48
elastic, 58
environment, 48
expert, 33, 37, 42, 136-137
harassing, 131
intelligent, as, 36
intermediate, 33-35, 37, 105
interviewing, 42-44
modeling, 55
mutability, 58
preference, 197, 219-220, 470
profile, 61
role, 46-47, 61
skill level bell curve, 33, 38
stakeholder perception of, 41
stupid, avoiding making user feel, 12, 13, 67, 158, 436-437
targeting primary, 56
testing involving, 53-54
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