diff --git a/docs/refguide.xml b/docs/refguide.xml
index 986bab6db..8c99d6423 100644
--- a/docs/refguide.xml
+++ b/docs/refguide.xml
@@ -1417,6 +1417,17 @@ used.
zombie for IP ID changes. Otherwise Nmap will use the port it
uses by default for TCP pings (80).
+ Ports can also be specified by name according to what the
+ port is referred to in the nmap-services. You
+ can even use the wildcards * and ? with the names. For example, to scan
+ ftp and all ports whose names begin with http, use .
+ Be careful about shell expansions and quote the argument to -p if unsure.
+
+ Ranges of ports can be surrounded by square brackets to indicate
+ ports inside that range that appear in nmap-services.
+ For example, the following will scan all ports in nmap-services
+ equal to or below 1024: . Be careful with shell
+ expansions and quote the argument to -p if unsure.
@@ -1622,6 +1633,27 @@ way.
instead.
+
+
+
+
+
+
+ --port-ratio
+ Scans all ports in nmap-services file with a ratio greater than the number specified as the argument. (new format nmap-services only.)
+
+
+
+
+
+
+
+
+ --top-ports
+ Scans the N highest-ratio ports found in nmap-services file. (new format nmap-services only.)
+
+
+