83 It is true that this construction results in what is, to my mind, a less than optimal position. There will be cases in which joinder at the outset would have been permissible under O 18 r 4(1), either by satisfaction of par (a) and (b) or by leave, but which do not engage the narrower power in O 18 r 6. For those cases, a plaintiff must commence new proceedings against the additional defendant and apply for consolidation. Greater flexibility in the court's powers would be desirable. However, in the process of construction, those considerations of consequence and inconvenience seem to me to be significantly outweighed by the textual and linguistic considerations, the structure of O 18 and O 21, and, to a lesser extent, the history of the relevant rules as I have outlined. When all these matters are considered, I do not think that the broader construction is a reasonably available construction. Thus I do not think that the requirements of O 1 r 4B(2) in construing the rules, and any advantage that the broader construction has in advancing the O 1 r 4B(1) goals, justifies or requires the adoption of the broader construction.