Setting accidentalStyle for all Score contexts

[Richard Shann]

The documentation

http://lilypond.org/doc/v2.18/Documentation/notation/displaying-pitches#automatic-accidentals

shows how to set the accidental style for a Score context, but when
there are several movements I find that putting

      \layout{\context {
        \Score
        \accidentalStyle neo-modern-voice-cautionary
      }}

before the first \score { } block sets neo-modern-voice-cautionary on
all the succeeding score blocks.

Have I stumbled on some dodgy feature, or is this actually documented?

Richard Shann