<H0.5><S.8>Line spacing <S1.2>can be <S.8>changed
at any time in a line<S1.4>
and can be <S1.6>positive <S-.4>or negative<S1.4>
it may be set to zero
<S0><JL10>to continue a line<S1.2>
But be careful of setting to zero<S0>
at the end of a line