leading text, tab-size in px.	leading text, tab-size in em.	leading text, tab-size in spaces.	leading text, tab-size in fraction.leading text	trailing text, tab-size in px.
leading text	trailing text, tab-size in em.
leading text	trailing text, tab-size in spaces.
leading text	trailing text, tab-size in fraction.
Some spaces... ' ' ... for size reference.A space... ' ' ... for size reference.'leading text', for size reference.