1913 introductions

thumb|Zippers with common teeth variations: metal teeth (top), coil teeth and plastic teeth

thumb|An American-style 15×15 crossword grid layout

Bopomofo, also called Zhuyin Fuhao ( ; ), or simply Zhuyin, is a transliteration system for Standard Chinese and other Sinitic languages. It is the principal method of teaching Mandarin pronunciation in Taiwan. It consists of 37 characters and five tone marks, which together can transcribe all possible sounds in Mandarin Chinese.

thumb | right | Declaration on Humanism Homaranismo () is a philosophy developed by L. L. Zamenhof, who laid the foundations of the Esperanto language. Based largely on the teachings of Hillel the Elder, Zamenhof originally called it Hillelism. He sought to reform Judaism because he hoped that without the strict dress code and purity requirements, it would no longer be the victim of antisemitic propaganda. The basis of Homaranismo is the sentence known as the Golden Rule: One should treat others as one would like others to treat oneself.

theory regarding ancient Greek religion

fairy chess piece; moves along ranks, files, and diagonals (like a queen) but only by hopping over another piece; if there is no piece to hop over, it cannot move

The millioctave (moct) is a unit of measurement for musical intervals. As is expected from the prefix milli-, a millioctave is defined as 1/1000 of an octave. From this it follows that one millioctave is equal to the ratio 21/1000, the 1000th root of 2, or approximately 1.0006934 ().