Depending on the level of detail, this can affect image rating as follows:
 
Tiny dips in the pubic profile that are still clearly it are Suggestive, e.g.:  
>>1779839 >>1778422
 
Full lines and wedges are Questionable, e.g.:  
>>1784847 >>1775253 >>1780374 >>1770557 >>1726175
 
Anything rather detailed, or starting to show the actual underlying vulva, is Explicit, e.g.:  
>>1704706 >>1773629 >>1785062 >>1737964 >>1618548 >>1609257 >>1729573