Open is a synonym of Unfold. Unfold is a synonym of Reveal. 
Draw is related to Trace. Trace is a type of Return. Return is a synonym of Render. Render is a synonym of Yield. 
Open <--Synonym--> Unfold <--Synonym--> Reveal 
Draw <--RelatedTo--> Trace --IsA--> Return <--Synonym--> Render <--Synonym--> Yield 