Special Characters in Macros
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A number sign (#) after a definition specifies a comment. To specify a literal number sign in a macro, use a caret (^), as in ^#.
A dollar sign ($) specifies a macro invocation. To specify a literal $, use $$.
To extend a definition to a new line, end the line with a backslash (\). When the macro is invoked, the backslash plus newline character is replaced with a space. To specify a literal backslash at the end of the line, precede it with a caret (^), or follow it with a comment specifier (#).
To specify a literal newline character, end the line with a caret (^), as in:
CMDS = cls^
dir