Class Names and Packages
Each InterSystems IRIS class has a name, which must be unique within the namespace where it is defined. A full class name is a string delimited by one or more periods, as in the following example: package.subpackage.subpackage.class. The short class name is the part after the final period within this string; the part preceding the final period is the package name.
The package name is simply a string, but if it contains periods, the InterSystems IRIS development tools treat each period-delimited piece as a subpackage. Your Integrated Development Environment (IDE) and other tools display these subpackages as a hierarchy of folders, for convenience.
