Invisible Ink

This looks like an ordinary sentence, but appearances deceive.​‌‌‌​​‌‌​‌‌​​​​‌​‌‌​‌​​‌​‌‌​‌​‌‌​‌‌​‌‌‌‌​‌‌‌‌​‌‌​‌‌​​​‌‌​‌‌‌​​‌​​‌‌​​​​‌​‌‌​​​‌‌​‌‌​‌​‌‌​‌​‌‌‌‌‌​‌‌‌​‌​​​‌‌​‌​​​​‌‌​​‌​‌​‌​‌‌‌‌‌​‌‌‌​​​​​‌‌​‌‌‌‌​‌‌​‌​​‌​‌‌​‌‌‌​​‌‌‌​‌​​​‌‌​​‌​‌​‌‌‌​​‌​​‌‌‌‌‌​‌