How to see only one subtask in WorkView

Could you provide an example?

Could you provide an example?

Could you provide an example?

Could you provide an example?

Could you provide an example?

Could you provide an example?

Could you provide an example?

Could you provide an example?

Could you provide an example?

I'm sorry, chromium on an unreliable connection went over-anxious :-)

:-) about over-anxious
Of course, I can describe a task, by the way, real task. I am writing an article for computer magazine about GTG!. In my mind the task consists from 4 subtasks:
1. to setup latest version
2. to write text
3. to prepare pictures, them explanations and different materials for article
4. send all prepared materials to editor
At the moment I can workout only one subtask from the list above. But I haven't any suggestions about duration for subtasks 1, 2, 3 and 4. I only know, that I cant write text before setup latest version. And so on.
So I want to see in the WorkView only one of the subtask - the current subtask I am working now. If I mark it as Done, I want to see the next subtask from the task, and so on.
For this functionality, by my opinion, may be added a list of tasks, entitled "Starts after " [list] "will be done." in the task editor.
Is it example describe my idea?

To sum up, you're proposing to have two kinds of subtasks: concurrent subtasks (like they're now, they all show up in the workview) and sequential subtasks("Starts after " [list] "will be done.").
That's an interesting idea and some software similar to GTG does that, so you should open a bug about that (one of the biggest problems with GTG is to keep it as straight-forward and easy to use as possible, which means that every proposed feature has to be discussed :) ).

From what I understand, you wouldn't accept to create a series of subtask like:

- send all prepared materials to editor
-- to prepare pictures, them explanations and different materials for article
--- to write text
---- to setup latest version

This way, your workview would show only the current subtask you're working on. May I ask why you consider this solution non satisfactory?

Yes, you summarize my proposal very complete and well. And can I use your words for bug/feature_request description? :) I open the feature request bug description after summarizing of our discussion.
About your proposal how to solve my problem using GTG's current functionality. It is great idea!
But a man usually thinks from the first or current step to next, and so on. It is natural thinking process. In some cases a man can't to conjecture some of necessary steps at the firs moment. In those cases initial plan needs to be rewrote, some steps will be added, some will be modified, and some may be deleted from initial plan. So by my opinion, more natural for plan explanation is sequence from first step to the last. This structure is more comfortable for any possible modifications, is not it? By the way, using this approach we can see in the task description all main steps for the task solving.
There are main reasons for my proposal.

Good. Go ahead and open a bug!

Thsnk you. This disciusssion is over, a new bug is started. :-)