History for H2

Revisions
 Mark George on 1 Sep 2022 : Updated H2
 Mark George on 1 Sep 2022 : Updated H2
 Mark George on 15 Sep 2021 : Updated H2
 Mark George on 23 Aug 2021 : Updated H2
 Mark George on 23 Aug 2021 : Updated H2
 Mark George on 23 Aug 2021 : Updated H2
 Mark George on 23 Aug 2021 : Updated H2
 Mark George on 13 Oct 2020 : Updated H2
 Mark George on 12 Oct 2020 : Updated H2
 Mark George on 7 Oct 2020 : Updated H2
 Mark George on 27 Jul 2020 : Updated H2
 Mark George on 27 Jul 2020 : Created H2