Locking a file
A file can be in one of two states of access; completely available to everyone, or available to anyone who can authenticate through ‘LDAP’. This effectively allows you to have a file that can be read by anyone or a file that can only be read by staff and students with a ÃûæÂÖ±²¥ login (regardless of whether they’re on or off campus at the time).
A file is locked when the lock symbol is highlighted 
and available to everyone when it is shaded out 
. You can change the state by clicking on the lock symbol for that file.