When people plan ahead of time what they want to say. is when people plan ahead of time what they want to say. For example, you might use a script to talk to your doctor. Scripts might be things you heard before, things you made up, or a combination of both.
Almost everyone uses scripts sometimes. Non-autistic people might script in small talk. They might say the same thing every time, like “How are you?”, or they might script to plan ahead for things like job interviews. But autistic people script a lot more, and our scripts can be more thought-out than non-autistic people’s scripts.