Version control is called in Swedish for versioning.
This means that previous versions of for example
program, web pages or source code files can be recreated and that all changes can be tracked.
A programmer or a team of developers usually uses some version management system.
With version management it is possible to write code separately on was its branch / branch and then beat
Together these into a working version of website or program.
If something goes wrong, the developers can go back to a previous working versionand compare the different
versions to see what went wrong. There are many different ways to use versioning, to
examples to have one branch for development, one for testing, and one for release (that is, what goes live). Themselves
the main branch is often called master or trunk.
Some different version management systems are Git and SVN.