Many small edits.
diff --git a/man/man3/muldiv.3 b/man/man3/muldiv.3
index 3bc6dda..36eb7b9 100644
--- a/man/man3/muldiv.3
+++ b/man/man3/muldiv.3
@@ -7,7 +7,7 @@
 .B #include <libc.h>
 .PP
 .B
-long muldiv(long a, long b, long c)
+long  muldiv(long a, long b, long c)
 .PP
 .B
 ulong umuldiv(ulong a, ulong b, ulong c)