persistant adjusts

1 files changed, 16 insertions, 7 deletions

diff --git a/docs/curl_easy_setopt.3 b/docs/curl_easy_setopt.3
index 80a8ae6ae..23cd0b415 100644
--- a/docs/curl_easy_setopt.3
+++ b/docs/curl_easy_setopt.3
@@ -2,7 +2,7 @@
 .\" nroff -man [file]
 .\" Written by daniel@haxx.se
 .\"
-.TH curl_easy_setopt 3 "5 March 2001" "libcurl 7.5" "libcurl Manual"
+.TH curl_easy_setopt 3 "6 March 2001" "libcurl 7.5" "libcurl Manual"
 .SH NAME
 curl_easy_setopt - Set curl easy-session options
 .SH SYNOPSIS
@@ -22,6 +22,10 @@ this manual carefully as bad input values may cause libcurl to behave badly!
 You can only set one option in each function call. A typical application uses
 many curl_easy_setopt() calls in the setup phase.
 
+NOTE: strings passed to libcurl as 'char *' arguments, will not be copied by
+the library. Instead you should keep them available until libcurl no longer
+needs them. Failing to do so will cause very odd behaviour or even crashes.
+
 The
 .I "handle"
 is the return code from the
@@ -86,14 +90,16 @@ libcurl what the expected size of the infile is.
 .TP
 .B CURLOPT_URL
 The actual URL to deal with. The parameter should be a char * to a zero
-terminated string. NOTE: this option is currently required!
+terminated string. The string must remain present until curl no longer needs
+it, as it doesn't copy the string. NOTE: this option is required to be set
+before curl_easy_perform() is called.
 .TP
 .B CURLOPT_PROXY
 If you need libcurl to use a http proxy to access the outside world, set the
 proxy string with this option. The parameter should be a char * to a zero
-terminated string. To specify port number in this string, append":[port]" to
+terminated string. To specify port number in this string, append :[port] to
 the end of the host name. The proxy string may be prefixed with
-"[protocol]://" since any such prefix will be ignored.
+[protocol]:// since any such prefix will be ignored.
 .TP
 .B CURLOPT_PROXYPORT
 Set this long with this option to set the proxy port to use unless it is
@@ -189,9 +195,11 @@ prompted for it.
 .TP
 .B CURLOPT_RANGE
 Pass a char * as parameter, which should contain the specified range you
-want. It should be in the format "X-Y", where X or Y may be left out. The HTTP
+want. It should be in the format "X-Y", where X or Y may be left out. HTTP
 transfers also support several intervals, separated with commas as in
-.I "X-Y,N-M".
+.I "X-Y,N-M"
+. Using this kind of multiple intervals will cause the HTTP server to send the
+response document in pieces.
 .TP
 .B CURLOPT_ERRORBUFFER
 Pass a char * to a buffer that the libcurl may store human readable error
@@ -202,7 +210,8 @@ library. The buffer must be at least CURL_ERROR_SIZE big.
 Pass a long as parameter containing the maximum time in seconds that you allow
 the libcurl transfer operation to take. Do note that normally, name lookups
 maky take a considerable time and that limiting the operation to less than a
-few minutes risk aborting perfectly normal operations.
+few minutes risk aborting perfectly normal operations. This option will cause
+curl to use the SIGALRM to enable timeouting system calls.
 .TP
 .B CURLOPT_POSTFIELDS
 Pass a char * as parameter, which should be the full data to post in a HTTP