In the following text what does labeling music with explicit language mean?
The executive pointed out that Apple isn't getting into the parenting business. He says that there are no standards for parenting, thus no standards on screen time. "People have different views about what should be allowed and not," he noted. But Cook did say that Apple is merely giving parents the controls to limit their kids' app usage if they feel that it is required. He added that Apple is working on a way to create age limits for apps and require parental approval for certain titles. The company also wants to label music with explicit language.
When I looked up "explicit" in the dictionary I found "obvious" and "clear". I don't know what is the act of labeling music with explicit language.