GCW Script has implemented the following functions to work with lists:

• LISTCLEAR – deletes the content of a list
• LISTADD – adds an object to a list
• LISTINSERT – inserts at index an object to a list
• LISTREMOVE – deletes an object at index from a list
• LISTSHUFFLE – mixes a list
• LISTSORT – sorts a list ascending or descending
• LISTGET – reads an object at index
• LISTADDALL – adds all elements from a list to a list
• LISTISEMPTY – checks if a list is empty
• LISTISNOTEMPTY – checks if a list is not empty
• LISTLENGTH – returns the length of a list – the number of objects of a list
• LISTTOSTRING – converts a list to a string
• LISTFROM – creates a new list from an object

To create a list you have to use the command DIM:

DIM variable