An errata was published on 28/09/2021, quotes throughout have been replaced and some acronyms have been expanded to their full title. Addionally bullet items have been updated on pages 4 and 6.
A change was made on the 07/10/2020 at PDF page 6. In section What is the GLSS, the entire content on this page was replaced.
An errata was published on 15/09/2020, at PDF page 10. The first paragraph under The Practicalities was removed and the contact email was updated.
The pdf and html have both been updated to reflect these changes.
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