(r5rs.info.gz) Programs

 
 5.1 Programs
 ============
 
 A Scheme program consists of a sequence of expressions, definitions,
 Expressions::; definitions and syntax definitions are the subject of
 the rest of the present chapter.
 
 Programs are typically stored in files or entered interactively to a
 running Scheme system, although other paradigms are possible; questions
 of user interface lie outside the scope of this report.  (Indeed,
 Scheme would still be useful as a notation for expressing computational
 methods even in the absence of a mechanical implementation.)
 
 Definitions and syntax definitions occurring at the top level of a
 program can be interpreted declaratively.  They cause bindings to be
 created in the top level environment or modify the value of existing
 top-level bindings.  Expressions occurring at the top level of a
 program are interpreted imperatively; they are executed in order when
 the program is invoked or loaded, and typically perform some kind of
 initialization.
 
 At the top level of a program (begin <form1> ...,) is equivalent to the
 sequence of expressions, definitions, and syntax definitions that form
 the body of the `begin'.

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(r5rs.info.gz) Program structure

(r5rs.info.gz) Definitions

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