Object, 26, 29, 40, 52, 67, 94, 169, 184
behavior, 28, 36, 42
interaction, 30, 40, 273
properties, 29, 36
receiver, 67
reference, 43, 49, 94, 250
sender, 67
structure, 29
Object-oriented, 26
Operating system, 2
Operations, 29, 42
Operators, 138, 189, 191
Output, 2, 13, 98, 100, 105