A user may have either moved or resized the window to which your console
is bound.  By issuing a WINDOW STATUS REPORT to the console, you can read
the current position and size in the input stream.  This window bounds
report takes the following form:

    <CSI>1;1;<bottom margin>;<right margin> r

The bottom and right margins give you the window row and column dimensions
as well. For a window that holds 20 lines with 60 characters per line, you
will receive the following in the input stream:

    9B 31 3B 31 3B 32 30 3B 36 30 20 72