Answer:
I move without wings, between silken strings. I leave as you find my substance behind. What am I?
I spend the day at the window go to the table for meals and hide at night.
I go up and down at the same time. Up towards to sky and down towards the ground. What am I?
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down but should not be forgotten.
I have a straight back and sharp teeth to cut objects.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?