Bukkit

/SSedit set <line> <text> - sets the "line" of sign to "text"
/SSedit add <line> <text> - adds to the "line" of sign "text"
/SSedit clear - clears sign
/SSedit ins - <line> <position> <text> - inserts "text" in "line" at "position"
/SSedit color line1color (line2color) (line3color) (line4color) - lineXcolor means: color of line X
/SSedit destroy - destroys sign you're looking at

/SSgroup create <group> - creates "group"
/SSgroup delete <group> - deletes "group"
/SSgroup exec <group> <command> <args> - executes a command on all signs in "group"
/SSgroup add <group> - adds the sign you're looking at to "group"
/SSgroup remove <group> - removes the sign you're looking out of "group"

/SSlist signs - lists signs
/SSlist overload - lists overloaded signs
/SSlist perms - lists permitted signs
/SSlist groups - lists groups
/SSlist version - shows version
/SSlist myperms - lists own permissions
/SSlist help <page> - shows help

/SSperms add <players> - add players to owners of a sign
/SSperms del <players> - del players from the owners of a sign
/SSperms rem - access to everybody for this sign
/SSperms list - lists owners of a sign

/SSpers save - saves
/SSpers load - loads

/SSspecial super - changes you to overload-mode (just needed forthe client mod users)
/SSspecial coord <signX> <signY> <signZ> <command> <args> - executes "command" on sign
/SSspecial read - posts you the sign text
/SSspecial shout - shouts the sign text in the chat

$<Color> in a text causes the following text to be colored in "Color"
\$<Color> shows "$Color"
\n in a text makes a new line

n in a text shows "\n"