== Introduction ==

Each model input is assigned an Enum in order to be found quickly (integers are easier to compare than strings).

== Add a new Enum ==

If you want to add a new Enum, the ONLY file that needs to be changed is src/c/shared/Enum/EnumDefinitions.h`. Open it with you favorite editor (vim) and add your new Enum. Make sure that:
 - It does not already exist (the compiler will tell you anyway)
 - It finishes with `Enum,`

Then you can run a synchronization script that will update the matlab and python Enum, StringToEnum and EnumToString automatically:

{{{
#!sh
cd $ISSM_DIR/src/c/shared/Enum/
./Synchronize.sh
}}}

You will then need to recompile the entire trunk (not just src/c), and there is no need to reconfigure:

{{{
#!sh
cd $ISSM_DIR/
make install
}}}

== Checking in the changes ==

In order to commit the new Enum, you will need to `svn add` the new matlab file in `$ISSM_DIR/src/m/enum`, and then commit all the files in `$ISSM_DIR/src/m/enum` and `$ISSM_DIR/src/c/shared/Enum`