In Visual Studio the Task List window is super useful and allows us to view items which require attention across a code base in a central location. To add tasks we add comments in our code which match predefined tokens or patterns.
TODO is the most frequently used token which is included by default but you can also create your own tokens from the Tools -> Options -> Environment -> Task List menu item. Custom tokens are stored locally, so if you intend on checking in code using them other developers will need to manual add them to their Visual Studio install too for them to show up in their Task List windows.
You can open the Task List window from the View menu and the image below (click the image to open a larger version in a new window) shows what it looks like after I’ve added a few dummy items.