As far as I understand, the icons highlighted in yellow show the variables created in the script. Such variables can only be changed in script code.
Variables without icons, highlighted in yellow, create in UI and can be changed manually.
In the values of the variables, the paths to the files that can be used when downloading the script are prescribed. These variable values are used in the script code to form the path to the files. Well, what is the structure of the files used, such and "terrible" way to them.