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+.TH RUNESTRCAT 3
+.SH NAME
+runestrcat,
+runestrncat,
+runestrcmp,
+runestrncmp,
+runestrcpy,
+runestrncpy,
+runestrecpy,
+runestrlen,
+runestrchr,
+runestrrchr,
+runestrdup,
+runestrstr \- rune string operations
+.SH SYNOPSIS
+.B #include <utf.h>
+.PP
+.ta \w'\fLRune* \fP'u
+.B
+Rune* runestrcat(Rune *s1, Rune *s2)
+.PP
+.B
+Rune* runestrncat(Rune *s1, Rune *s2, long n)
+.PP
+.B
+int runestrcmp(Rune *s1, Rune *s2)
+.PP
+.B
+int runestrncmp(Rune *s1, Rune *s2, long n)
+.PP
+.B
+Rune* runestrcpy(Rune *s1, Rune *s2)
+.PP
+.B
+Rune* runestrncpy(Rune *s1, Rune *s2, long n)
+.PP
+.B
+Rune* runestrecpy(Rune *s1, Rune *es1, Rune *s2)
+.PP
+.B
+long runestrlen(Rune *s)
+.PP
+.B
+Rune* runestrchr(Rune *s, Rune c)
+.PP
+.B
+Rune* runestrrchr(Rune *s, Rune c)
+.PP
+.B
+Rune* runestrdup(Rune *s)
+.PP
+.B
+Rune* runestrstr(Rune *s1, Rune *s2)
+.SH DESCRIPTION
+These functions are rune string analogues of
+the corresponding functions in
+.IR strcat (3).
+.SH HISTORY
+These routines first appeared in Plan 9.
+.SH SEE ALSO
+.IR memmove (3),
+.IR rune (3),
+.IR strcat (2)
+.SH BUGS
+The outcome of overlapping moves varies among implementations.
