Added public files
Roughly added all public files. Probably missed some, though.
diff --git a/doc/hook/msg_discarded b/doc/hook/msg_discarded
new file mode 100644
index 0000000..5360dfe
--- /dev/null
+++ b/doc/hook/msg_discarded
@@ -0,0 +1,28 @@
+SYNOPSIS
+ #include <sys/driver_hooks.h>
+
+ set_driver_hook(H_MSG_DISCARDED, value)
+
+ <value> being:
+
+ string <msg>
+ string <closure>(object user)
+
+DESCRIPTION
+ Optional hook to specify a message or take other measures
+ when a message had to be discarded, because they could not
+ be delivered to the player <user>. If the hook is not set,
+ a standard message is used.
+
+ If the hook is a string, this text will be sent as soon as
+ possible to the player informing about the lost transmission.
+
+ If the hook is a closure, it is the function to be called
+ and the result is used as the message to be sent. Lambda
+ closures are bound to the interactive <user> first.
+
+HISTORY
+ Introduced in LDMud 3.3.719
+
+SEE ALSO
+ hooks(C), configure_interactive(E)