type Skill = Agility
| Attack
| Constitution
| Construction
| Cooking
| Crafting
| Defence
| Divination
| Dungeoneering
| Farming
| Firemaking
| Fishing
| Fletching
| Herblore
| Hunter
| Invention
| Magic
| Mining
| Prayer
| Ranged
| Runecrafting
| Slayer
| Smithing
| Strength
| Summoning
| Thieving
| Woodcutting
type SkillType = Artisan
| Combat
| Elite
| Gathering
| Support
isMembers : Skill -> Basics.Bool
skillType : Skill -> SkillType
maxLevel : Skill -> Basics.Int