the 'L' I think is probably just a Command, such as this custom one by me for example, lol:
(actually this code isn't done right, but it's only for example)
<command name="room_description_command">
<pattern>roomdesc</pattern>
<script>
msg (room.description)
// or maybe it's: invoke (room.description), if it's a script (run as script)
</script>
</command>
Commands are wonderful!
a command for showing your player's stats
a command for help
a command for equipment
a command for magic
a command for a 'pedia'
a command for leveling up
a command for items
a command for etc etc etc
--------
<command name="stats_command">
<pattern>stats</pattern>
<script>
ClearScreen
msg ("Strength: " + player.strength)
msg ("Endurance: " + player.endurance)
msg ("Dexterity: " + player.dexterity)
msg ("Agility: " + player.agility)
msg ("Speed: " + player.speed)
msg ("Luck: " + player.luck)
wait {
ClearScreen
}
</script>
</command>