Basic Customization > User Interface Customization > Customizing HTML Clients Using the Windchill JSP Framework > Checkin/Checkout > Solution > Prerequisite knowledge
  
Prerequisite knowledge
To achieve this objective, you need to have an understanding of the following:
Windchill “work in progress” checkin/checkout concepts.
The actions framework in the Windchill client architecture.
Basic development involving HTML forms, JSP, and XML.