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Notation

The convention in this manual is to show triangular brackets enclosing a name to indicate that a quantity described by the name must be supplied, eg. <sortword>.

Optional quantities are enclosed in double square brackets, eg. [<type>].

The letter `r' following a quantity indicates that the item may be repeated.

Alternative quantities are denoted by `|', so <a>|<b> indicates either <a> or <b>.

In the commands section wherever <statements> is used it refers to either a simple statement (single command) or a complex statement (group of commands enclosed within curly braces), ie.


<statements> -> <single command>

| {

[ <single command> ]r

}



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