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2.12 Commenting input files

A comment is a remark for the human reader of the music input, it is ignored and has no effect on the printed output. There are two types of comments. The percent symbol % introduces a line comment; the rest of the line is ignored. A block comments marks a whole section of music input, anything that is enclosed in %{ and %} is ignored. The following fragment shows possible uses for comments

     % notes for twinkle twinkle follow
     c4 c  g' g  a a
     
     %{
         This line, and the notes below
         are ignored, since they are in a
         block comment.
     
         g g f f e e d d c2
     %}

There is a special statement that really is a kind of comment. The version statement marks for which version of LilyPond the file was written. To mark a file for version 2.1.17, use

     \version "2.1.17"

These annotations make future upgrades of LilyPond go more smoothly. Changes in the syntax are handled with a special program, convert-ly (see Invoking convert-ly), and it uses \version to determine what rules to apply.

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