Subtask hide/unhide

Can subtask lists for a task list be hidden/unhidden? 
I am considering purchasing the premium pkg, to take advantage of the subtask feature, which I use often. But before possibly making the purchase I would like to know if the subtask list for a task can be hidden/unhidden. I use many long task lists and subtask lists and prefer to have option to hide & unhide the subtasks lists, to only see subtasks under each primary task when I choose to see them.