On the button and Part-and-parcel

On the button adjective - Being precise with regard to a prescribed or specified criterion.

Part-and-parcel and on the button are semantically related. In some cases you can use "Part-and-parcel" instead an adjective phrase "On the button".

On the button and part-and-parcel are semantically related. Sometimes you can use "On the button" instead an adjective phrase "Part-and-parcel".