.RS

.RS [strname ]

Start automatically numbered reference. End with .RF . If provided, use strname as a troff string in which to save the reference number surrounded by brackets and appropriate line motions. This allows referring to the reference again from text further on in the document.

Example

J. Programmer\*(Rf
.RS W1
.I "Whizprog \- The Be All and End All Program,"
J. Programmer, Wizard Corp, April 1, 1999.
.RF
describes the design of
.IR whizprog .
The second chapter\*(W1 
presents
an especially insightful analysis.  ...