Where attribute values can have multiple values, a semi-colon is used as a 'delimiter' between each item and optionally after the last item. Multi-value data types include:
List:
$MyList = [car;train;boat;plane;boat];
Set:
$MySet = [car;train;boat;plane;boat];(here valueboatwill be de-duplicated and the list sorted in the resulting Set), i.e.[boat;car;plane;train].
$MyDictionary = {car:weels;truck:wheels;train:rails};
Note in the case of a dictionary, the list is one of key:value pairs.
See also—notes linking to here: