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Task/Comments/J/comments.j

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+NB. Text that follows 'NB.' has no effect on execution.
+
+'Character strings in J may have their value be ignored and treated as comment text.'
+
+0 : 0
+Multi-line comments may be placed in strings,
+like this.
+)
+
+Note 'example'
+Another way to record multi-line comments as text is to use 'Note', which is actually
+a simple program that makes it clearer when defined text is used only to provide comment.
+)
+
+{{)n
+  J release 9's nestable blocks can be used as comments.
+
+  Typically, this would be in contexts where the blocks would not be used.
+  That said, "literate coding practices" may stretch the boundaries here.
+
+  Also, noun blocks (beginning with ')n') avoid syntactic concerns about content.
+
+  These blocks even allow contained '}}' sequences to be ignored (unless, of
+  course the }} character pair appears at the beginning of a line).
+}}