I have done one or two more samples for this chapter,photos follow.
1.This is tucking with a twin needle .I have had this needle since April 1976 ,it came with my machine we bought with the tax back from getting married and this is the first time it has ever been used!
2. An example of knife pleats.
3.From left -double box pleat, box pleat,inverted pleat.
In Colette Wolff's book there are lots more samples ,some I have never heard of like "organ pipe" and "cartridge " pleats but I think these should suffice.