NR-INCR(1)                  General Commands Manual                 NR-INCR(1)

NNAAMMEE
       nr-incr - increment a number register by accessing it

DDEESSCCRRIIPPTTIIOONN
       Roff can count by merely accessing a number register: 1 2 3

       It can also change the step size: 5 7 9

       It can also count down: 6 3 0 -3

       Down in negative steps is up: -1 1 3 5

       Go to some other value, then continue incrementing with an unchanged
       (negative) step size: 40 38 36

OpenBSD                         April 10, 2018                      NR-INCR(1)