MExE provides a standard environment for mobile stations to access internet and intranet services. It classifies mobile stations into four classmarks based on their capabilities and supported technologies, ranging from WAP to Java 2ME. Common Language Infrastructure Classmark 4 supports CLI-based applications on resource-constrained devices. The MExE browser supports discovering and downloading Java applications through JAD files and installing JAR files if space is available, otherwise prompting the user to delete applications to make space.