The earliest examples of e-toki are of a monk pointing to a picture in a picture hall and explaining the story of either Shakyamuni (the historical Buddha) or another important Buddhist monk, most notably Prince Shotoku who is often attributed with bringing Buddhism to Japan from China, or in the case of secular e-maki, exposing the hidden Buddhist message behind the images.
The earliest examples of e-toki where only performed to a small group of the ruling class, and only upon special request.
These early performances were non-accompanied, and a solo monk would use a pointer with a soft cotton tip to tap the paintings in areas that exemplified the point to be made ( the cotton tip was to reduce the wear on the scrolls, many emaki show the wear of these performances despite this precaution with areas of the paint flaked off in vital image areas).
Originally monks would preach from these pictures in private audiences for the elite and ruling class.
[2] Though the practice of e-toki diminished after the 17th Century, it is still performed at festivals and upon special request at temples today.