Tree MDI is a GRML, CSV, and text delimited file and web browser. It reads, displays, edits, and saves content in all formats. As an MDI browser, it supports multiple browser windows. Each browser window has its own content and navigation history. A browser window has two parts, a form and view. The form sends web requests and the view displays results. GRML uses one form. Results have result items. A result item is defined by its column.