I want to know the answer to the following question:
What did many Presbyterian churches introduce as a result of modifying prescriptions?
All the background I'm provided with is that "Although there are set services for the "Lord's Day", one can find a service to be evangelical and even revivalist in tone (especially in some conservative denominations), or strongly liturgical, approximating the practices of Lutheranism or Anglicanism (especially where Scottish tradition is esteemed),[clarification needed] or semi-formal, allowing for a balance of hymns, preaching, and congregational participation (favored by probably most American Presbyterians).". Is that enough to answer the question?
Answer: no