Mention more restrictions on timeouts when using signals

docs/libcurl/curl_easy_setopt.3

@@ -21,7 +21,7 @@
 .\" * $Id$
 .\" **************************************************************************
 .\"
-.TH curl_easy_setopt 3 "16 Oct 2008" "libcurl 7.19.1" "libcurl Manual"
+.TH curl_easy_setopt 3 "28 Oct 2008" "libcurl 7.19.1" "libcurl Manual"
 .SH NAME
 curl_easy_setopt \- set options for a curl easy handle
 .SH SYNOPSIS
@@ -81,8 +81,10 @@ process. This option is mainly here to allow multi-threaded unix applications
 to still set/use all timeout options etc, without risking getting signals.
 (Added in 7.10)
 
+If this option is set and libcurl has been built with the standard name
+resolver, timeouts will not occur while the name resolve takes place.
 Consider building libcurl with ares support to enable asynchronous DNS
-lookups. It enables nice timeouts for name resolves without signals.
+lookups, which enables nice timeouts for name resolves without signals.
 .PP
 .SH CALLBACK OPTIONS
 .IP CURLOPT_WRITEFUNCTION
@@ -1300,8 +1302,10 @@ In unix-like systems, this might cause signals to be used unless
 \fICURLOPT_NOSIGNAL\fP is set.
 .IP CURLOPT_TIMEOUT_MS
 Like \fICURLOPT_TIMEOUT\fP but takes number of milliseconds instead. If
-libcurl is built to use the standard system name resolver, that part will
-still use full-second resolution for timeouts. (Added in 7.16.2)
+libcurl is built to use the standard system name resolver, that portion
+of the transfer will still use full-second resolution for timeouts with
+a minimum timeout allowed of one second.
+(Added in 7.16.2)
 .IP CURLOPT_LOW_SPEED_LIMIT
 Pass a long as parameter. It contains the transfer speed in bytes per second
 that the transfer should be below during \fICURLOPT_LOW_SPEED_TIME\fP seconds
@@ -1364,9 +1368,11 @@ timeouts). See also the \fICURLOPT_TIMEOUT\fP option.
 In unix-like systems, this might cause signals to be used unless
 \fICURLOPT_NOSIGNAL\fP is set.
 .IP CURLOPT_CONNECTTIMEOUT_MS
-Like \fICURLOPT_CONNECTTIMEOUT\fP but takes number of milliseconds instead. If
-libcurl is built to use the standard system name resolver, that part will
-still use full-second resolution for timeouts. (Added in 7.16.2)
+Like \fICURLOPT_CONNECTTIMEOUT\fP but takes the number of milliseconds
+instead. If libcurl is built to use the standard system name resolver,
+that portion of the connect will still use full-second resolution for
+timeouts with a minimum timeout allowed of one second.
+(Added in 7.16.2)
 .IP CURLOPT_IPRESOLVE
 Allows an application to select what kind of IP addresses to use when
 resolving host names. This is only interesting when using host names that