NAME
        AllocClickTabNodeA -- Allocate a ClickTab node.

    SYNOPSIS
        struct Node * AllocClickTabNode(Tag, ...)
        node = AllocClickTabNode(Tag, ...)

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

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

    INPUTS
        columns - How many columns your ClickTab has.
        taglist - Attributes for the node, passed onto SetClickTabNodeAttrsA().

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

    SEE ALSO
        FreeClickTabNode(), SetClickTabNodeAttrsA()