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.\" $OpenBSD: incr.in,v 1.1 2018/04/10 00:52:21 schwarze Exp $
.TH NR-INCR 1 "April 10, 2018"
.SH NAME
nr-incr \- increment a number register by accessing it
.SH DESCRIPTION
.nr myr 0 1
Roff can count by merely accessing a number register:
\n+[myr]
\n+[myr]
\n+[myr]
.PP
.nr myr +0 1+1
It can also change the step size:
\n+[myr]
\n+[myr]
\n+[myr]
.PP
.nr myr +0 3
It can also count down:
\n-[myr]
\n-[myr]
\n-[myr]
\n-[myr]
.PP
.nr myr -0 -2
Down in negative steps is up:
\n-[myr]
\n-[myr]
\n-[myr]
\n-[myr]
.PP
.nr myr 42
Go to some other value,
then continue incrementing with an unchanged (negative) step size:
\n+[myr]
\n+[myr]
\n+[myr]
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