English language grammar - Part 1

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.