Strange Arrow in Visual Studio Gutter Window

Question

What does the following arrow icon mean in the Visual Studio 2012 gutter window? I've never seen it before.

This particular line of code has nothing special about it, nor do I recall doing anything to this line that would cause an arrow to appear. It's definately attached to this line of code. Moving the line of code down causes the arrow to follow.

I have no add-ons installed in Visual Studio.

Answer 1

It marks a Task List shortcut. You add them with Edit > Bookmarks > Add Task List Shortcut, [Ctrl+E,T] keystroke. That adds an entry to the task list, use View > Task List to display it. Select "Shortcuts" in the combobox. You'll see a list of all the shortcuts you added. Double-click an entry to jump to the line.

Remove it again with Edit > Bookmarks > Remove Task List Shortcut, [Ctrl+E,T] again.

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NOTE: In visual studio 2015 and above, its [Ctrl+K,Ctrl+H]