NGWS SDK Documentation  

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3.1 External source directives

A source file may include external source directives that indicate a mapping between source lines and text external to the source. External source directives have no effect on compilation and may not be nested.

Source ::= [ ExternalSourceElement+ ]
ExternalSourceElement ::= ExternalSourceGroup | LogicalLine
ExternalSourceGroup ::=
 # ExternalSource ( StringLiteral , IntLiteral ) LineTerminator
 [ LogicalLine+ ]
 # End ExternalSource LineTerminator