NAME
        AllocChooserNodeA -- Allocate a Chooser node.

    SYNOPSIS
        struct Node * AllocChooserNode(Tag, ...)
        node = AllocChooserNode(columns, Tag, ...)

        struct Node * AllocChooserNodeA(struct TagItem *)
        node = AllocChooserNodeA(taglist)

    FUNCTION
        Allocates a node that can be added to the Exec linked list of
        labels in the chooser.  This is the only way to allocate a
        node for this list, you cannot allocate nodes yourself because
        the Chooser class uses a private node structure.

    INPUTS
        taglist - Attributes for the node, passed onto SetChooserNodeAttrsA().

    RESULT
        node - A node that can be added into the Exec list of labels for
            a Chooser gadget.

    SEE ALSO
        FreeChooserNode(), SetChooserNodeAttrsA()