How do you make the font in serial monitor larger?
How do you make the scroll stop?
Thanks
There is an "autoscroll" box on the lower left of the Serial Monitor window.
If you untick it the contents will not scroll, instead you will get a slider bar that you can move up and down manually.
The IDE and Monitor are written in Java.
I could not see any way to change the font within the Monitor or the IDE.
I am using Windows XP, the Java Control Panel did not seem to provide a way of changing the font size and changing the Windows font size did not change the content of the Monitor - sorry 
The serial monitor is just a simple terminal emulator. You can use any other terminal emulator (which is likely to have more features available) instead of the IDE's.
You can use any other terminal emulator
This is true. In Windows Hyperterminal does let you change font and size though the output is fairly crude.
That is true; however you will probably have to disconnect ("close") the connection in your terminal emulator before you upload a sketch, and then re-open when done. Using the IDE's primitive serial monitor you don't have to close it down when you program (although it would be nice if the serial monitor opened back up after the upload...).
-- Steven