Input objects are there to change variable values without changing any underlying model equations. Input devices are generally only available on the interface. The main exception to that is the sketchable graph, which can be used on both models and the interface.
Normally, input controls are applied to a single variable such as price[Pizza,Chicago] but you can also control array slices such as price[Pizza,*] which would set the price for pizza at all cities. To do this, simply select * in the Choose Subscript dialog box.
Note When you control a value for both an array slice and an array element the element control will take precedence.
Note If you specify control for two overlapping array slices the one that binds will be the last one that is applied. This can lead to confusing results and is not recommended.