.TH XREF 1 .SH NAME xref \- cross reference for C programs .SH SYNOPSIS .B xref [ file ... ] .SH DESCRIPTION .I Xref\^ reads the named .I files\^ or the standard input if no file is specified and prints a cross reference consisting of lines of the form .nf identifier file-name line-numbers ... .fi .PP Function definition is indicated by a plus sign (\f3+\fP) preceding the line number. .SH "SEE ALSO" cref(1).