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Single arrow - limited depth where no provisions below the section/clause level can be seenonly individual sections/regulations/articles etc. are shown together with grouping levels such as Parts and Chapters. Schedules and the grouping levels within them are also shown.
Double arrow - full depth where every provision (including can be viewed including subsections and paragraphs and provisions within quoted structures) can be viewed.
B - Turn the structure view on and off
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