| Name | hologram_lines | 
| Object | NPCTag | 
| Input | ListTag | 
| Related Tags | <NPCTag.hologram_lines>Returns the list of hologram lines attached to an NPC. | 
| Description | Sets the NPC's hologram lines. Each item in the list can be either: - An ElementTag for a permanent hologram line - A map with "text" (ElementTag) and "duration" (DurationTag) keys for a temporary hologram line that will disappear after the specified duration | 
| Source | https://github.com/DenizenScript/Denizen/blob/dev/plugin/src/main/java/com/denizenscript/denizen/objects/NPCTag.java#L1346 |