I was thinking the same but using Rebol: todo [ housework high: "Clean the house" medium: "Wash the dishes" medium: "Buy more soap"

I was thinking the same but using Rebol: todo [ housework high: "Clean the house" medium: "Wash the dishes" medium: "Buy more soap" ] And this is so easy to validate & use via the parse dialect that comes with Rebol. Here's a validation example: todo-rule: [ set task-name word! some [ set item-priority set-word! set item-desc string! ] ] >> parse [bad] todo-rule == false >> parse [incomplete high:] todo-rule == false >> parse [incorrect high: "item1" "erggh!"] todo-rule == false >> parse [housework high: "foo" medium: "bar" medium: "baz"] todo-rule == true