Document the three new configuration options I've added tonight

[u/mdw/putty] / doc / config.but

diff --git a/doc/config.but b/doc/config.but
index e6a2045..8603589 100644 (file)
--- a/doc/config.but
+++ b/doc/config.but
@@ -1,4 +1,4 @@
-\versionid $Id: config.but,v 1.15 2001/11/25 19:22:47 simon Exp $
+\versionid $Id: config.but,v 1.16 2001/11/29 22:32:37 simon Exp $
 
 \C{config} Configuring PuTTY
 
@@ -1046,6 +1046,17 @@ server.
 Keepalives are only supported in Telnet and SSH; the Rlogin and Raw
 protocols offer no way of implementing them.
 
+\S{config-nodelay} \q{Disable Nagle's algorithm}
+
+Nagle's algorithm is a detail of TCP/IP implementations that tries
+to minimise the number of small data packets sent down a network
+connection. With Nagle's algorithm enabled, PuTTY's bandwidth usage
+will be slightly more efficient; with it disabled, you may find you
+get a faster response to your keystrokes when connecting to some
+types of server.
+
+The Nagle algorithm is disabled by default.
+
 \H{config-telnet} The Telnet panel
 
 The Telnet panel allows you to configure options that only apply to
@@ -1246,6 +1257,13 @@ consider substandard. By default, PuTTY supplies a preference order
 intended to reflect a reasonable preference in terms of security and
 speed.
 
+Single-DES is not supported natively in the SSH 2 draft protocol
+standards. One or two server implementations do support it, by a
+non-standard name. PuTTY can use single-DES to interoperate with
+these servers if you enable the \q{Enable non-standard single-DES in
+SSH 2} option; by default this is disabled and PuTTY will stick to
+the standard.
+
 \H{config-ssh-auth} The Auth panel
 
 The Auth panel allows you to configure authentication options for
@@ -1267,6 +1285,18 @@ your server supports this, you should talk to your system
 administrator about precisely what form these challenges and
 responses take.
 
+\S{config-ssh-tis} \q{Attempt keyboard-interactive authentication}
+
+The SSH 2 equivalent of TIS authentication is called
+\q{keyboard-interactive}. It is a flexible authentication method
+using an arbitrary sequence of requests and responses; so it is not
+only useful for challenge/response mechanisms such as S/Key, but it
+can also be used for (for example) asking the user for a new
+password when the old one has expired.
+
+PuTTY leaves this option enabled by default, but supplies a switch
+to turn it off in case you should have trouble with it.
+
 \S{config-ssh-agentfwd} \q{Allow agent forwarding}
 
 This option allows the SSH server to open forwarded connections back