README.TXT files also may contain instructions about setting up the program to run most efficiently.
N.B.: Note the position of "also"!
Turn off the system, wait 15 seconds, and then turn on the system again
N.B.: Note the use of 'Turn off/on the system'!
Apart from the ultrasonic sensor input, a hydrostatic liquid level sensor can additionally or alternatively be used.
N.B.: Note that 'additionally or alternatively' comes before 'be used'.
This is done by executing a home cycle after each power-up.
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