.TH foo 1 2024-04-02 "groff test suite"
.ie \n(.g .ds ^ \(ha
.el       .ds ^ ^
.
.de Q
.ie \n(.g \(lq\\$1\(rq\\$2
.el \{\
.  if t ``\\$1''\\$2
.  if n "\\$1"\\$2
.\}
..
.SH Name
microtypography \- a demonstration of a change to
.IR history (3)
formatting
.SH Description
.SS Formerly
.TP
.B \d\s+2\*^\s-2\u\fIstring1\fP\d\s+2\*^\s-2\u\fIstring2\fP\d\s+2\*^\s-2\u
Quick substitution.  Repeat the last command, replacing
.I string1
with
.IR string2 .
Equivalent to
.Q !!:s\d\s+2\*^\s-2\u\fIstring1\fP\d\s+2\*^\s-2\u\fIstring2\fP\d\s+2\*^\s-2\u
(see \fBModifiers\fP below).
.SS Now
.TP
.B \*^\fIstring1\fP\*^\fIstring2\fP\*^
Quick substitution.  Repeat the last command, replacing
.I string1
with
.IR string2 .
Equivalent to
.Q !!:s\*^\fIstring1\fP\*^\fIstring2\fP\*^
(see \fBModifiers\fP below).