During a press conference at the Anne Frank House, a museum now, researchers of the Huygens research institute and the NIOD institute for war, genocide and holocaust studies revealed that they unraveled two hidden taped pages, of which the content could be reproduced thanks to new digital techniques. He said these pages were important because they show Frank's first foray into trying to write in a more literary tone.
The two pages are not the only time Frank jotted down dirty jokes or wrote about sexuality, although in later passages she treats the subjects more maturely.
The Anne Frank House photographed the pages with a high- resolution camera and a light shining on them during a regular check on the diary's condition in 2016. "They make it clear that Anne, with all her gifts, was above all also an ordinary girl".
Anne Frank House director Ronald Leopold said the pages were not really scandalous or surprising, as Frank openly discusses her sexual maturation elsewhere in the diary.
Anne, age 13 at the time, wrote the two pages on September 28, 1942, less than three months after she, her family and another Jewish family went into hiding from the Nazis in a secret annex behind a canal-side house in Amsterdam.
Researchers say that the pages tell more about Anne Frank as a girl, teenager and writer.
In addition to the jokes, Anne summarizes what a period is, describes the mechanics of sex in couched terms, and relays what she has heard of prostitution.
"She was probably afraid that other people she was hiding with, either her father, her mother or the other family would discover her diary and would read these things", Leopold said.
With regards to prostitution, she wrote: All men, if they are normal, go with women, women like that accost them on the street and then they go together. "As mattresses for the soldiers". One evening he came home and then he saw his friend in bed with his wife, then the man said: "'He gets to and I have to!'"
Anne wrote her diary while she and her family spent two years in hiding in an Amsterdam canal-house, in an attempt to avoid Nazi occupiers during World War II.
In 1944, the Frank family was discovered, arrested and sent to separate concentration camps.
Miss Frank and her sister died in camp, when she was just 15. He recovered her diary, and had it published two years later. Only Anne Frank's father, Otto, survived the Holocaust.