Mission for April 14th

1. 詩經·檜風·匪風
2. Implemented Set, P_queue, Stack ADTs in C++

Meta-Math For Today:

1.  A way to defining customized command:

In the ``ALIASES" section of the configure file, create the command by ``name=value" format.

E.g.: If we want to create a command "@Unit" such that "@Unit{Meter}" can refer to "<unit>Meter</unit>" in the resulting XML file, we can define our customized command as follows:

ALIASES     +=     Unit{1}=<unit>\1</unit>

2. The "@param" and "@retval" commands in Doxygen can specify the name of the target variables.