I don’t recall from where I heard it, but I’ve heard libraries described as proper tools where you get to take their facilities and (to an extent) use them as y

I don’t recall from where I heard it, but I’ve heard libraries described as proper tools where you get to take their facilities and (to an extent) use them as you wish, versus frameworks which are an old text adventure game; you have to work within the constraints (and hopefully the frame work is both sane and well documented, otherwise “You are standing in an open field west of a white house, with a boarded front door.”)