Speaking of gender, I just tried to add a sibling for someone on my tree...I am unsure if it was a brother or a sister but I know that the sibling in question had a daughter.  I was intending to add the genderless white box and then add the daughter below that, but it would not let me until I chose the parent's gender.  It would be awesome if you didn't have to choose that in order to link a child!  Basically I've met the child in question but can't remember if she belongs to the original person's brother or sister...yet I need a placeholder for the time being, in order to include the child on my tree.  Sad day!  I just picked Female for now but it may get confusing later as this is a distant person on the tree.