There are some special variables that can be added to the motd, banner and help files that will be interpreted by eggdrop:

%b

display bold

%v

display inverse

%_

display underline

%f

display flashing via telnet, bold underline via irc

%B

bot's nickname ("LamestBot")

%V

current eggdrop version ("eggdrop v1.6.0")

%E

long form of %V ("Eggdrop v1.6.0 (c)1997 Robey Pointer (c)1999, 2000 Eggheads")

%C

channels the bot is on ("#lamest, #botnetcentral")

%A

whatever is set in 'admin' (see 'set admin')

%T

the current time ("15:00")

%N

the current user's nickname ("Robey")

%U

the current operating system the bot is on

%%

a literal percent sign ("%")

You can also encode messages which can only be read by people with certain flags:

%{+m}some text%{-}

Only masters would see this.

%{+1}some text%{-}

Only people with user flag #1 see this.

%{+b}some text%{-}

This is only displayed to users doing a remote '.motd' from another bot.

%{+|m}some text%{-}

Only channel masters would see this.

Other extended % commands are:

%{cols=N}

start splitting output into N columns

%{cols=N/W}

same, but use a screen width of W

%{end}

end columnated or restricted (%{+m}) block

%{center}

center the following text (70 columns)

© 1997 Robey Pointer
© 1999,2000 Eggheads