Convert a task into project - in one step
This is a feature available in 'Things 2' - the ability to turn a task into a project with a single 'drag and drop'. For those times when you've created a task - and then realised that it needs to be broken down into several steps (ie, the task is actually a 'project'). This happens to me all the time...
Shane S. commented
I reintroduced this idea here: