crayons("Blue")
crayons(c("Purple Heart", "Burnt Sienna"))
crayons("Purple Heart", "Burnt Sienna")
crayons("Purple") # returns nothing because no exact match
crayons("Purple", notexact=TRUE) # returns all the purples
crayons("Blue", notexact=TRUE) # returns all the blues
crayons("Blue", "Purple", notexact=TRUE) # returns everything with either blue or purple
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