BLOCK

The characters and whitespace that define the boundaries and sections of an Avail code block. Note that Avail block delimiters ( and ) are not usually part of an enveloping expression; this contrasts with other programming languages that require parentheses around an if condition and/or braces around the then block. In these languages, the delimiters are part of the expression itself. In Avail, certain contexts may accept either a single compact expression or an entire delimited block to evaluate to a single value, so the delimiters are always interpreted as part of the contents, and not part of the context.