+can contain any characters.
+
+The way this field is used depends on context. If it is being used in
+the SYSOP command context then you are offered 5 random numbers and you
+have to supply the corresponding letters. This is now mainly for ax25
+connections.
+
+If it is being used on incoming telnet connections then, if a password
+is set or the:
+
+ set/var $main::passwdreq = 1
+
+command is executed in the startup script, then a password prompt is
+given after the normal 'login: ' prompt.
+
+=== 0^SET/PASSWORD^Set your own password
+This command only works for a 'telnet' user (currently). It will
+only work if you have a password already set. This initial password
+can only be set by the sysop.
+
+When you execute this command it will ask you for your old password,
+then ask you to type in your new password twice (to make sure you
+get it right). You may or may not see the data echoed on the screen
+as you type, depending on the type of telnet client you have.
+
+=== 9^UNSET/PASSWORD <call> ...^Delete (remove) a user's password
+This command allows the sysop to completely delete and remove a
+password for a user.
+
+=== 0^SET/PROMPT <string>^Set your prompt to <string>
+=== 0^UNSET/PROMPT^Set your prompt back to default
+This command will set your user prompt to exactly the string that you
+say. The point of this command to enable a user to interface to programs
+that are looking for a specific prompt (or else you just want a different
+fixed prompt).
+
+ SET/PROMPT clx >
+
+UNSET/PROMPT will undo the SET/PROMPT command and set you prompt back to
+normal.