By a simple Drag and drop one deposits the icon ''Variables system'' with the site desired in the column ''Properties“. Or '' Double to click” on the icon ''Variables system''.
This kind of property makes it possible to recover in a field the variables system of the station.
One finds, in “Variables system“, a pull-down menu with all the variables system.
You can find all the variables system by opening a window DOS and by typing ''set'':
You will then obtain the list of the variables available for this kind of property.