CSL supports three different forms for comments. Multiline comments are enclosed between "/*" and "*/", while single line comments can follow either a double-slash "//" or a pound sign "#".
The following constructs must end with a line break:
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Import directive
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Formula
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Rule
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Message
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Function definition
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Set block
Line breaks within these constructs require use of the line continuation character (a space followed by an underscore--see below), except as follows:
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Conditional expressions can contain a line break after a boolean expression that follows
if. -
Set blocks must contain a line break after each formula.
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Foreach expressions must contain a line break after each formula.
CSL permits VB-style line continuation:
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// A space followed by the underscore is line continuation
a_bool = (part.thickness > machine.minThickness) && _
(part.thickness < machine.maxThickness)