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.\" $OpenBSD: register.in,v 1.3 2019/02/06 20:54:28 schwarze Exp $
.TH REGISTER 1 "February 6, 2019"
.SH NAME
register \- conditional testing whether a register is defined
.SH DESCRIPTION
.ie rmyreg OOPS
.el not yet defined
.br
.nr myreg 0
.ie rmyreg now defined
.el OOPS
.if !rmyreg OOPS
.PP
identifier + identifier:
.ie rmyreg myreg is defined
.el OOPS
.PP
escape sequence after identifier:
.ie rmyreg\(enmyreg is defined
.el OOPS
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