Is there only one sign language in the Netherlands, or are there multiple?

"If I don't know a certain sign, I ask my son."

"We're religious, and I immediately noticed this having an effect on my faith."

"We simply went to visit all sorts of schools."

"I think it's important for them to learn to be around hearing people as well."

"In Norway they offer sign language to babies at school."

"I really wonder how he's going to experience it later on."

"We run into all kinds of situations where we're forced to use sign language. That's quite exciting."

"They can really babble together in sign language."

"You end up in this medical scene, I almost forget to enjoy having my child."