Merging a task results in errors

Some other feedback: when merging a task, make the list a drop-down as needing to type the other task will result in errors when one forgets or can't ref the exact syntax. Also, on the detail page of each task, I think there should be more information there, that you can change to affect the hierarchy as you add tasks. IE : subtask of _____ (task list drop down), tag (choose from collected tabs), even (project), (must, can) finish before next task (begins, ends) etc.