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+.TH PCRE 3
+.SH NAME
+PCRE - Perl-compatible regular expressions
+.SH SYNOPSIS
+.rs
+.sp
+.B #include <pcre.h>
+.PP
+.SM
+.br
+.B int pcre_config(int \fIwhat\fR, void *\fIwhere\fR);
+
+.SH DESCRIPTION
+.rs
+.sp
+This function makes it possible for a client program to find out which optional
+features are available in the version of the PCRE library it is using. Its
+arguments are as follows:
+
+  \fIwhat\fR     A code specifying what information is required
+  \fIwhere\fR    Points to where to put the data
+
+The available codes are:
+
+  PCRE_CONFIG_LINK_SIZE     Internal link size: 2, 3, or 4
+  PCRE_CONFIG_MATCH_LIMIT   Internal resource limit
+  PCRE_CONFIG_NEWLINE       Value of the newline character
+  PCRE_CONFIG_POSIX_MALLOC_THRESHOLD
+                            Threshold of return slots, above
+                              which \fBmalloc()\fR is used by
+                              the POSIX API
+  PCRE_CONFIG_STACKRECURSE  Recursion implementation (1=stack 0=heap)
+  PCRE_CONFIG_UTF8          Availability of UTF-8 support (1=yes 0=no)
+
+The function yields 0 on success or PCRE_ERROR_BADOPTION otherwise.
+
+There is a complete description of the PCRE native API in the
+.\" HREF
+\fBpcreapi\fR
+.\"
+page, and a description of the POSIX API in the
+.\" HREF
+\fBpcreposix\fR
+.\"
+page.