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I'm not much with DB stuff and I haven't played around much with Joomla's acl but I do know the left right values in a DB table are used to create a tree structure, in this case it's a nested set model. The purpose would be for heirarchy, so where ever the record falls in the tree structure would d...

Hi I've been playing around with _core_acl_aro_groups table trying to add a new access level and I have successfully done so. However, I can't quite figure out what lft and rgt columns are for. lft seems to determine the visual placement of the element in a tree, while rgt doesn't quite do anything....