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VisibleList -- the class of all visible lists


There are three types of lists that can be entered directly from the keyboard, as follows.
i1 : {a,b,c}

o1 = {a, b, c}

o1 : List
i2 : [a,b,c]

o2 = [a, b, c]

o2 : Array
i3 : (a,b,c)

o3 = (a, b, c)

o3 : Sequence
We introduce the class of visible lists as a convenience for referring to lists of these types.

Types of visible list :

Functions and methods returning a visible list :

Methods that use a visible list :

Fixed objects of class VisibleList :

For the programmer

The object VisibleList is a type, with ancestor classes BasicList < Thing.