V

valid interactions, testing for an interface, 65

values

allowed, list of, 88

of requirement patterns, 20, 45

variables, 103, 195

variants of a requirement pattern, 22

versions

required for an upgrade, 277

of a requirement pattern, 22

of technology, 67

version history, F-51, F-53

version numbers

in the document history, F-51

of patterns, 22

of references, F-50

strategies for, F-52–F-53

viewing

archived data, 114, 115–116

of systemwide information, 160

vision, accessibility concerns and, 171, 173–174, 178–181

visual cue for audio alert, 182

visually distinct requirements, F-34

voice use, accessibility concerns, 171, 174

Voluntary Product Accessibility Template (VPAT), 184