olemus
populaarne tarkvara versioonihalduse süsteem vaba tarkvara litsentsiga
= a software versioning and revision control system distributed as open source under the Apache License

ülevaateid
https://en.wikipedia.org/wiki/Apache_Subversion
https://deveo.com/svn-tutorial/
https://www.tutorialspoint.com/svn/svn_tutorial.pdf
http://subversion.apache.org/