6 Commands and Declarations

REDUCE

6 Commands and Declarations

A command is an order to the system to do something. Some commands cause visible results (such as calling for input or output); others, usually called declarations, set options, deﬁne properties of variables, or deﬁne procedures. Commands are formally deﬁned as a statement followed by a terminator

$\langle $command$\rangle $	$\longrightarrow $	$\langle $statement$\rangle $$\langle $terminator$\rangle $
$\langle $terminator$\rangle $	$\longrightarrow $	;$\ \mid \ $$

Some REDUCE commands and declarations are described in the following sub-sections.

6.1 Array Declarations
6.2 Mode Handling Declarations
6.3 END
6.4 BYE Command
6.5 Timing Facilities
6.6 DEFINE Command
6.7 RESETREDUCE Command

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\(\langle \)command\(\rangle \)	\(\longrightarrow \)	\(\langle \)statement\(\rangle \)\(\langle \)terminator\(\rangle \)
\(\langle \)terminator\(\rangle \)	\(\longrightarrow \)	;\(\ \mid \ \)$