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lilypond-learning: Naming conventions of objects and properties

 
 4.1.3 Naming conventions of objects and properties
 --------------------------------------------------
 
 We met some object naming conventions previously, in Contexts and
 engravers.  Here for reference is a list of the most common object and
 property types together with the conventions for naming them and a
 couple of examples of some real names.  We have used ‘A’ to stand for
 any capitalized alphabetic character and ‘aaa’ to stand for any number
 of lower-case alphabetic characters.  Other characters are used
 verbatim.
 
 Object/property type     Naming convention        Examples
 ---------------------------------------------------------------------------
 Contexts                 Aaaa or AaaaAaaaAaaa     Staff, GrandStaff
 Layout Objects           Aaaa or AaaaAaaaAaaa     Slur, NoteHead
 Engravers                Aaaa_aaa_engraver        Clef_engraver,
                                                   Note_heads_engraver
 Interfaces               aaa-aaa-interface        grob-interface,
                                                   break-aligned-interface
 Context Properties       aaa or aaaAaaaAaaa       alignAboveContext,
                                                   skipBars
 Layout Object            aaa or aaa-aaa-aaa       direction,
 Properties                                        beam-thickness
 
    As we shall see shortly, the properties of different types of object
 are modified by different commands, so it is useful to be able to
 recognize the types of objects and properties from their names.
 

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