Index: usr.sbin/iovctl/iovctl.conf.5
===================================================================
--- usr.sbin/iovctl/iovctl.conf.5
+++ usr.sbin/iovctl/iovctl.conf.5
@@ -103,13 +103,17 @@
 .It string
 Accepts any string value.
 .It uint8_t
-Accepts any integer in the range 0-255, inclusive.
+Accepts any integer in the range 0 to 255, inclusive.
 .It uint16_t
-Accepts any integer in the range 0-65535, inclusive.
+Accepts any integer in the range 0 to 65535, inclusive.
 .It uint32_t
-Accepts any integer in the range 0-2**32, inclusive.
+Accepts any integer in the range 0 to
+.Po 2**32 - 1 Pc ,
+inclusive.
 .It uint64_t
-Accepts any integer in the range 0-2**64, inclusive.
+Accepts any integer in the range 0 to
+.Po 2**64 - 1 Pc ,
+inclusive.
 .El
 .Sh OPTIONS
 The following parameters are accepted by all PF drivers: