clarify what "-P -" does

diff --git a/docs/curl.1 b/docs/curl.1
index 8269b7b5ef5bed277294474b08a26176c2db5fe4..fa5a20f03f09d6b676d1d525ef6c3ad8147acc80 100644 (file)
--- a/docs/curl.1
+++ b/docs/curl.1
@@ -741,7 +741,8 @@ i.e "192.168.10.1" to specify exact IP number
 .IP "host name"
 i.e "my.host.domain" to specify machine
 .IP "-"
-(any single-letter string) to make it pick the machine's default
+make curl pick the same IP address that is already used for the control
+connection
 .RE
 
 If this option is used several times, the last one will be used. Disable the