The console is not case sensitive: entering any of 'tdt' or 'TDT' or 'TdT' will toggle the debugging text.
You can scroll the console output using the 'Page Up' and 'Page Down' keys. The console prompt will appear in the lower left-hand corner of your screen. depending on your keyboard layout), found near the '1' key on most keyboards. The console can then be accessed in-game by toggling the 'tilde key' (the actual key can be ~, º, ¬, |,^, \, §, etc. If it's not there, you can add it in the section. To enable the console, make sure the bAllowConsole is set to 1 in your oblivion.ini file.
