Block comments begin with the character sequence slash-asterisk /*, which is followed by any number of other characters and line breaks, followed by a closing asterisk-slash */ sequence. The entire contents of all block comments are ignored.

End-of-line comments begin with two consecutive slash characters // followed by any number of characters up to and including the end of the current line. The entire contents of all end-of-line comments are ignored.

ApamaDoc comments are a special kind of block comment which begin with the character sequence slash-asterisk-asterisk /**. Their content is used when generating documentation for your EPL code. See also Generating Documentation for Your EPL Code.