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+.TH PCRE_GET_SUBSTRING 3 "24 June 2012" "PCRE 8.30"
+.SH NAME
+PCRE - Perl-compatible regular expressions
+.SH SYNOPSIS
+.rs
+.sp
+.B #include <pcre.h>
+.PP
+.nf
+.B int pcre_get_substring(const char *\fIsubject\fP, int *\fIovector\fP,
+.B "     int \fIstringcount\fP, int \fIstringnumber\fP,"
+.B "     const char **\fIstringptr\fP);"
+.sp
+.B int pcre16_get_substring(PCRE_SPTR16 \fIsubject\fP, int *\fIovector\fP,
+.B "     int \fIstringcount\fP, int \fIstringnumber\fP,"
+.B "     PCRE_SPTR16 *\fIstringptr\fP);"
+.sp
+.B int pcre32_get_substring(PCRE_SPTR32 \fIsubject\fP, int *\fIovector\fP,
+.B "     int \fIstringcount\fP, int \fIstringnumber\fP,"
+.B "     PCRE_SPTR32 *\fIstringptr\fP);"
+.fi
+.
+.SH DESCRIPTION
+.rs
+.sp
+This is a convenience function for extracting a captured substring. The
+arguments are:
+.sp
+  \fIsubject\fP       Subject that has been successfully matched
+  \fIovector\fP       Offset vector that \fBpcre[16|32]_exec()\fP used
+  \fIstringcount\fP   Value returned by \fBpcre[16|32]_exec()\fP
+  \fIstringnumber\fP  Number of the required substring
+  \fIstringptr\fP     Where to put the string pointer
+.sp
+The memory in which the substring is placed is obtained by calling
+\fBpcre[16|32]_malloc()\fP. The convenience function
+\fBpcre[16|32]_free_substring()\fP can be used to free it when it is no longer
+needed. The yield of the function is the length of the substring,
+PCRE_ERROR_NOMEMORY if sufficient memory could not be obtained, or
+PCRE_ERROR_NOSUBSTRING if the string number is invalid.
+.P
+There is a complete description of the PCRE native API in the
+.\" HREF
+\fBpcreapi\fP
+.\"
+page and a description of the POSIX API in the
+.\" HREF
+\fBpcreposix\fP
+.\"
+page.