We experiment with free-form notations that could be as versatile as a text editor but that somehow takes care of linking without typing integers.
We will start with nodes with a colon and relations without. We rely on not having spaces in names to make parsing simpler. github 
Person:Consumer consumes Consumable:VegOil which depletes Resource:Health which increases Disease:HeartStrokeObesity Resource:Health increases Economy:LostLifeWages Consumable:VegOil demands Person:Producer which consumes Resource:Forest which depletes Resource:Diversity Resource:Forest increases Resource:CO2 which increases Resource:Temperature which increases Calamities:FireFloodWar
A line that begins with a relation continues the line above. We write relations in lower case because they looks more distinctive pretty printed.
http://ward.dojo.fed.wiki/assets/pages/mock-graph-data/freeform.html HEIGHT 300