-The https link is used to access image files. `{version}` will be replaced by the name of the release, e.g. `19.07.4`. `{taget}` will be replaced by the main- and sub target, e.g. `ath79/generic`.
+The https link is used to access image files. There are different variables available:
+
+* `{version}`: Version in the profiles.json files. E.g. `19.07.4` or `SNAPSHOT`.
+* `{target}`: Main- and sub target, E.g. `ath79/generic`.
+* `{base}`: Distinct path to the targets directory. E.g. `releases/18.06.8/targets/`