WorldEdit is an in-game map editor with over 100 functions that makes building and fixing really fast with three types of tools: https://dev.bukkit.org/projects/worldedit/
Command Reference
https://worldedit.enginehub.org/en/latest/commands/
Permissions
https://worldedit.enginehub.org/en/latest/permissions/
g:worldedit_admin:
permissions:
- worldedit.*
Download
http://dev.bukkit.org/media/files/584/140/worldedit-5.3.zip (1.2.5 R1.0)