Source: https://dev.bukkit.org/projects/lwc
Please Note we use the old original LWC, not the new updated Modern LWC plugin, we built on the old one for players security reasons.

LWC is the longest-lived single block protection plugin that protects both the block itself and contents of Chests, Furnaces, and Dispensers. It can also protect any other blocks, and by default will also protect Doors (Wooden + Iron), Signs and Trap Doors.

Blocks can be protected with three basic protection types:

Private

By default, only you can access this protection. You can also modify it (or specify when creating) to add other players or groups to the protection, so they can access it. Say you wanted Notch and Hidendra to both access the protection. When creating the protection, you could do /cprivate Notch Hidendra or if it already exists /cmodify Notch Hidendra. If you wanted to remove Hidendra from the private protection, you can use /cremove -Notch

Password

A password is set on the protection and anyone that knows the password can open it. You yourself also need this password each time you log in.

Public

Mainly targeted at community chests, a Public chest means just that: anyone can access it, but no one can protect it which makes it advantageous because it cannot be made private by someone else.

Commands

• /lwc – The LWC command for everything, however aliases are available to make some commands shorter. Type /lwc in-game for more detailed help.
• /cprivate – The alias of /lwc create private (or /lwc -c private), it creates a private protection.
• /cpassword <password> – The alias of /lwc create password <password>, it creates a passworded protection.
• /cpublic – The alias of /lwc create public, it creates a public protection
• /cremove – Allows you to remove a protection you own (or if you’re an LWC admin, any protection) – you must click on the protection after using /cremove in order to remove it.
• /cunlock <password> – Allows you to attempt to gain access to a passworded protection after LWC tells you you attempted to open a password protection.
• ... more! There are aliases for all major used commands and every alias is not listed here.

Permissions

Advanced permissions

Basic permissions:

• lwc.protect – Allows the player to create and manage their own protections. It also allows them to use enabled modes and flags.
• lwc.mod – Allows the player to open any chest, but not remove them.
• lwc.admin – Gives the player absolute power to LWC – this node should be considered dangerous if used incorrectly as this node essentially gives you the right to destroy every protection (and even the block & inventory contents associated with it) in one command!
• lwc.deny – Prevents players with this node from interacting with anything LWC can protect. For example, from opening or destroying protected and unprotected chests, furnaces, etc if protectable.