/sl
Save all of the letter player objects they have previously created to a file
In the game
Usage: /saveletters <ObjectSetName>
Allows you to save all of your letter player objects to a file, the object set name
becomes the file name and must contain no spaces or silly characters.
ONLY use A to Z and 0 to 9.
The shortcut for this command is: /sl or /sapl
What it does
Not explained in detail yet.
Wiki