ST. PAUL, Minn. — The state driver’s manual has been updated to tell drivers what to do if they are stopped by police and are carrying a legal firearm. The new language is more specific than the manual that’s being replaced. The change responds to the 2016 police killing of Philando Castile, who had been stopped in suburban St. Anthony and had even told the officer that he had a gun but didn’t mention that he had a permit. The officer was charged with manslaughter but was acquitted. After the acquittal, Castile’s mother reached a nearly $3 million settlement from the city. Castile’s mother, Valerie Castile, became part of a working group police on procedures to reduce deadly encounters.