Inside a secret annex above her father's office, Anne Frank edited passages from her first diary, the book that captured a teenager's experience of the Holocaust. What she hid underneath brown gummed paper on two pages was revealed on Tuesday – five crossed-out phrases, four risqué jokes and 33 lines about sex education and prostitution.
The two pages, the only pages that the teenager ever covered, were photographed in 2016 during a regular check on the condition of her diaries, said the Anne Frank House.
The pages were backlit by a flash and image-processing software helped researchers to make out the words, reported the Associated Press.
"I'll use this spoiled page to write down 'dirty' jokes," Frank had written on September 28, 1942. Then she filled a page with words about how a young woman starts to menstruate around age 14, "a sign that she is ripe to have relations with a man but one doesn't do that of course before one is married."
She also wrote about prostitution. "All men, if they are normal, go with women, women like that accost them on the street and then they go together. In Paris they have big houses for that. Papa has been there."