Task

Show all ways to include text in a language source file
that's completely ignored by the compiler or interpreter.



Related tasks

   Documentation
   Here_document


See also

   Wikipedia
   xkcd (Humor: hand gesture denoting // for "commenting out" people.)


# The rest of the line is ignored
#{
   This is a
   multiline comment
}#
NIL
Immediately stop reading this file. Because all text in the input file following
a top-level 'NIL' is ignored.
 
This is typically used conditionally, with a read-macro expression like
`*Dbg
so that this text is only read if in debugging mode.