what does "consider it done" mean?

It means he is going to do it.

Your professor means that he will send a support letter. It does not mean that he has already done it, but because you have asked, he will do it.

He probably means that of course he will send the letter for you. And he'll do it soon. So, don't worry about it. Consider it done!

It means he is going to send the support letter and not to worry about it..it will be done asap!!

It literally means that you do not have to worry about it because you can think of it as already done, but he is saying that he will do it.

if you say could you put thing in the cupboad then they reply, consider it done then you can consider it as already being done cause they'll do it

It means he will do it quickly - it's as good as done, but not yet done. He will do it though and you can count on him.

Go with Curious on this one.

He's saying that he'll get the task completed so you don't have to worry about it.

It means that you can count on him so much, you can already think of the task as completed...

yup....=]

it means hes on it, and u can count on him to do it.. since he said:consider it means its not done yet