1.   A single, but important, article discussing the quality systems needed for production of reference materials represents quality assurance.

2.   But the present, incoherent system does need reform.

3.   Eventually, though, old cast iron systems will need repair.

4.   Firstly, such systems will need to talk to each other in a flexible, universal language.

5.   It could also be a forgetting term, when a system needs to unlearn something.

6.   Some climbers are very enthusiastic about the new proposal, recognising that the current system needs revising and bringing up to date.

7.   Such systems would need to organize their knowledge, figuring out what data is significant, reorganizing when necessary.

8.   The electrical system needs a complete overhaul.

9.   The existing system needed substantial modification.