The *View* refers to the part of the application that is responsible for UI. This consists of *View Page Parts*, CSS files, JS files, and also graphics and multimedia assets of the application. Code for *View Page Parts*, CSS files and JS files can be created and managed directly through the Opendelight IDE. However, you can also edit these files in your favourite code editor too. *View Page Parts (VPP)* are files that contain UI content consisting of HTML and PHP print statements or simple loops and conditions. They are called *Page Parts* as one or more such file will create a complete UI that goes to the client-side for rendering. These are defined on the Opendelight IDE while creating or editing events and are available as `$APP->VIEWPARTS` within the application. The content of VPP can be created and managed directly through the Opendelight IDE. However, you can also edit these