What are .rar-files and what do I have to do with them?

: Further information

.rar-files are larger files that are divided into several smaller files – so-called "archives". If you start a download with the Filemaster it will automatically download all necessary files, unpack them and put them together.
If you have already downloaded .rar-, .rar.part01- or r01-files simply click on “Files” and double click one of the .rar-, .rar.part01- or r01-files, which you can see in this folder. The software will then unpack all the files and put them together.