.TDL File Extension

Translates characters in certain fonts to mathematical symbols

Tasklist created by ToDoList, an application that allows users to organize their tasks and overall schedule; contains tasks, dates, duration, priority, alarm reminders, and other scheduling data.

ToDoList can visualize tasklists as a Task Tree, List View, Calendar, Gantt Chart, and Statistics. The application can also export tasklists to a variety of file formats, such as .HTML, .ICS, .GAN, and .MM.

A TDL file stores data in a text format with blocks of information separated by tabs. It is similar to a .CSV file, but uses tabs to delineate data instead of commas. TDL files can be imported into most spreadsheet programs.

Tab delineated files may also use the .TSV extension.