Provides constants.
Usefull data to be used across the site.
| DIFFICULTY_ID | Stage difficulty constants. |
| SOURCE_ID | Unit source constants. |
| ELEMENT_ID | Element constants. |
| ARCHETYPE_ID | Unit archetype constants. |
| STAT_ID | Stat constants. |
| EFFECT_AREA_ID | Leadr skill area constants. |
| AREA_TYPE_ID | Playable area group constants. |
| SCENARIO_ID | Scenario area constants. |
| DUNGEON_ID | Dungeon section constants. |
| ELEMENTAL_RIFT_DUNGEON_ID | Elemental Rift Dungeon constants. |
| RAID_RIFT_DUNGEON_ID | Rift raid level constants. |
| LABYRINTH_STAGES_ID | Constants for all the types of stages in the Tartarus Labyrinth. |
| BUILDING_ID | Building constants. |
| DECORATION_ID | Decoration constants. |
| INVENTORY_TYPE_ID | Inventory categories constants. |
| INVENTORY_ID | Items constants. |
| ENHANCE_MONSTER_ID | Storage-able enhance monster constants. |
| RUNE_SET_ID | Rune set constants. |
| RUNE_STAT_ID | Rune stat constants. |
| QUALITY_ID | Rune (and other items) quality constants. |
| CRAFT_ID | Craft items constants. |
| GUILD_MEMBER_GRADE_ID | Guild member rank constants. |
| ARENA_RANKING_POINTS | Arena ranking constant. |
| ARENA_RANKING_RANK | Arena ranking constant. |
| FILTER | Default filter values; |