This website, since 1994, is a modest contribution to the history of literature whose feature for writers, calligraphers, scribes, etc.. contained in these pages is learned in construction, mathematics and hidden their works. Among the books written that can not (or never) read, and others whose form merits the cache, found also books riddle , invented writing, secret, multi-level reading ... This historical overview is completed gradually discovered ...

Website accessed by more than one hundred countries and 1.5 million page views a year on average in recent years, it has been enriched by other passionnate peope located in the USA, Hungary, Cameroon, Egypt, Australia, UK, Germany ...

I present also ambigrams (entries reversed or symmetrical), writings mysterious of all time, some hand-lettered text, the calligrams, secret writings that over the centuries and many other exciting discoveries ...