Merge the following from the English version:

1.17 -> 1.18 applications.sgml
1.27 -> 1.29 availability.sgml
1.36 -> 1.39 includes.sgml
1.22 -> 1.23 internet.sgml
1.18 -> 1.20 mailto.sgml
1.39 -> 1.41 publish.sgml
1.46 -> 1.49 where.sgml
1.43 -> 1.49 security/security.sgml
1.19 -> 1.20 tutorials/index.sgml