Developer credits
Git commits in Moodle 3.10.8 by Nathan Nguyen
commit e10cbb53f6e3c5648a1da07e29950c3df5f00231 Author: Nathan Nguyen <nathannguyen@catalyst-au.net> Date: Wed, 20 Oct 2021 18:25:33 +0800 Tag: v3.10.8 MDL-72679 qtype_ddmarker: Fix incorrect positions in multiple viewportss