How to display console output in Counter Strike: Source

counter-strike-source

Is it possible to display console output somewhere at the top of the screen, for example? I use console echo command sometimes and it display something to console. But to see what was displayed I have to open console ~ and then close it. But I want to see what was echoed immediately. I want to achieve something like on the screen shot below:

enter image description here

Red text says:
This is the console output. Everything in console I want to see here. How can I accomplish that?

Best Answer

In console, or preferably in an autoexec.cfg, set:

developer 1