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An application is generally constructed from code blocks.

A block is a piece of program text that group statement.

It' is generally executed as a unit (excepted for SQL Block where block manipulation may occurs such as filter pusing)

The following are blocks:

• anonymous block. An anonymous block is a block of code without name that then cannot be called (ie reused). The statement are between block character such as: ( and ) or { and }
• Reusable block. They are block of code with a name that can be reused (ie function or class)

Statements are grouped for:

• isolation. See Language - Scope of an identifier (Variable, Package, Lexical)
• and reuse.

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See also

• The off-side rule. Instead of punctuation or keywords indentation is used to delimit program blocks (Python use it)