INTRODUCTION
============
This set of examples can be used to test phrasebooks. Especially the gap and
maxima phrasebooks.

Source files can be found in the following directories:

source/examples	contains the example files and a file to include them:
		examples.xml
source/xml	contains the MathDox files for creating tables with phrasebook
		tests.
source/xsl	contains the XSLT stylesheets to create MathDox pages
		consisting of a table of phrasebook tests.

GOOD EXAMPLES
=============
To be useful for a testing a CAS, the example should allow the CAS to do
something with it. In other words the expression should be such that it can be
simplified. 

The example should furthermore be easy to understand and should not use other
symbols if that is not necessary. For example an addition of matrices might be
a good example for matrices, but not necessarily for arith1.plus, because it
arith1.plus might be implemented when matrices are not.