How can i make the size of the screen for the message bigger?

can i change the size of the screen where i have to write the messages?

by example in Outlook it is almost the whole monitor-screen but in Yahoo it is only a few square centimetres.



Thank you very much, greetings.How can i make the size of the screen for the message bigger?
If you mean in the Yahoo Mail program, press the F11 key - that removes a lot of the headers, giving you a bigger space for messages.

If you mean in Yahoo Messenger, use the mouse arrow pointer to drag the space larger in any direction (or at a corner for both at once)