The customize editor contains two more editors. Figure 6 shows the manager editor. It displays the registered attribute handlers. Uptonow, there is only one available which handles Java expressions.
The handler editor consists of packages which are defined to search for classes. This can be compared to the set of import statements in Java programs. This part is very important if you want to use a class which is embedded in a non-standard package. E.g. you want to use class Pair from Objectspace. The CLASSPATH environment variable has to be set to the package which contains Pair. That means the JAR file. Thereafter in the handler editor, the package has to be inserted. In our example com.objectspace.jgl must be inserted. Figure 7 shows the handler editor.
