sec2.1	Examples from Section 2.1
sec2.2	Examples from Section 2.2
sec2.3	Examples from Section 2.3
sec2.4	Examples from Section 2.4
sec2.5	Examples from Section 2.5
sec3.1	Examples from Section 3.1
sec3.2	Examples from Section 3.2
sec3.3	Examples from Section 3.3
sec3.4	Examples from Section 3.4
sec4.1	Examples from Section 4.1
sec4.3	Examples from Section 4.3
sec6.2	Examples from Section 6.2
sec6.4	Examples from Section 6.4
sec6.5	Examples from Section 6.5
sec7.1	Examples from Section 7.1
sec7.2	Examples from Section 7.2
sec9.2	Examples from Section 9.2
sec9.3	Examples from Section 9.3
sec9.4	Examples from Section 9.4
sec9.5  Examples from Section 9.5
sec10.4 Examples from Section 10.4
sec10.7 Examples from Section 10.7
sec15.1 Examples from Section 15.1
sec15.6 Examples from Section 15.6
sec17.8	Examples from Section 17.8
examples Examples yet to be put into sections
