How can you disable the 2nd and alpha indicators at the bottom of the screen?

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Q: How do you make that the status line is not visible on the screen so that the status indicators do not mess up your graphics?
A: The most general method (I use this) is: disable auto-int 1 using OSSetSR function (status line indicators are updated from this interrupt). Note that in this case you need to read the keyboard using the _rowread function, because ngetchx etc. are based on auto-int 1. I used this method in my program cblaster (you can pick it from ticalc). Anyway, if you use _rowread, you should also disable auto-int 5 as well.