27.18 Good Practise

20200105 Ensure that files are under version control such as with gitlab, github or bitbucket. Version control systems support the recovery of previous versions of the file, to always be able to go back to a previous working version of the software, for example. Also these software development repositories support multiple people working on the same project. They also facilitate sharing of the software more broadly, contributing back to the community from which we are all benefiting. If the material is not public then the repositories can be marked as private, or as open source software, gitlab can be installed on your own internal server.

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