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This document is for Xerox internal use only

SmaHtalk Kernel Language fv1anual
BY Larry Tesler

SEPTEMBER 1977

Smalltalk is a programming rang'uage that deals with objects. Every object has its own
data. Objects communicate by sending and receiving messages according to simple.
protocols.

Objects are grouped into classes. The objects of a class are called its instances. Each
class specifies the protocols its instances will know as well as the methods they will use
to respond to messages they receive.