Lessons update (Yet again)

[Nick NICHOLAS <nicholas@uci.edu>]

Major overhaul of lessons 1-6 (particularly 5-6). Many more examples and
exercises, in desperate dash for Logfest.
*one more time*, added CR to end of all files.
CVS:
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CVS: Enter Log. Lines beginning with `CVS:' are removed automatically
CVS:
CVS: Committing in .
CVS:
CVS: Modified Files:
CVS: less1.doc.xml less10.doc.xml less11.doc.xml less12.doc.xml
CVS: less13.doc.xml less14.doc.xml less15.doc.xml less2.doc.xml
CVS: less3.doc.xml less4.doc.xml less5.doc.xml less6.doc.xml
CVS: less7.doc.xml less8.doc.xml less9.doc.xml lessStart.doc.xml
CVS: lessStart.html.doc.xml lessStart.silencoding.doc.xml
CVS: lessinfo.doc.xml lessintro.doc.xml lessons.doc.xml
CVS: lessvocab.doc.xml Makefile
CVS:
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Nick Nicholas, Breathing {le'o ko na rivbi fi'inai palci je tolvri danlu}
nicholas@uci.edu -- Miguel Cervantes tr. Jorge LLambias