I don't know how this is called so I hope you understand my explaination.
Sometimes I get font families that have just one fontfile to click on and install the complete family. Sometimes all the font weights are separate files that you'd need to click them all in order to install.
For some reason the FFIL files are linked together and I don't understand how this works. If I knew how this phenomenia is called, I could Google for it.
How do I make a font family that has one fontfile and by clicking on that it installs the complete family?