So you log into a Cisco terminal server router quite often and for some reason these old terminal servers always seem to have a problem with the terminal lines and they have to be cleared regularly. But the clear line command requires enable which requires the enable password. Either you hate the extra typing or you want to enable this command for everyone without giving everyone the enable password. Well you can type this into your config to make the command available from the initial login.
Enter configuration commands, one per line. End with CNTL/Z.
rtroobmelb(config)#privilege exec level 1 clear line
The next time you login you can clear the line without using enable.
User Access Verification
rtroobmelb>clear line 14
Here is more information on changing privilege levels for cisco routers: