https://github.com/Ettrig/LMS1 https://en.wikipedia.org/wiki/Learning_management_system
https://lexiconlmsworkspace.slack.com/
https://docs.google.com/spreadsheets/d/1n_jIrUcO4yAcQVacCsaobvbcVwUMBMdgyKiJ_NQYyJw/edit#gid=0
https://docs.google.com/presentation/d/1FtGl9iaCK-iivp7qXR8DVRkqC-Ox-6ZbsEv0O4dP0AY/edit?usp=sharing