Phon is a universal auxiliary writing system invented by Samuel Putman.
Universal because, like the International Phonetic Alphabet, Phon can be
used in principle to write any statement in any language. Auxiliary because,
like Esperanto, Phon is not designed to replace existing natural scripts,
but rather to offer a way for all peoples of the world to write,
precisely, the statements they wish to make.
Therefore, Phon is featural, representing sounds by the shapes of the
individual glyphs. Featural writing systems have been designed before,
and Phon owes a debt to these. In particular, it can be considered a
descendant of the Tengwar, although it uses the basic scheme in a
different manner. Consonants are composed of a stem (the sirpe) which
shows the locations where the sound is articulated, and a leaf (lasse)
showing place of articulation. Vowels also have a rational form, and
can be placed above or below the lasse of a consonant, or over a bare
sirpe to represent dipthongs and isolated vowels.
Furthermore, Phon is designed so that every stroke, and hence every
character, exhibits asymmetry over the vertical axis. That is to say,
no characters take the form of the letter 'w', which is symmetrical
a cross its own axis, and no characters take the forms of the lowercase
letters 'b' and 'd', which are mirrors of each other across this axis.
As a result, Phon can be written and understood in either direction,
and with either hand, without changing the shapes of the strokes.
Type of writing system: phonetic alphabet
Writing direction: horizontal or vertical
Used to write: any language
Non-Pulmonic consonants and other symbols
All human beings are born free and equal in dignity and rights. They
are endowed with reason and conscience and should act towards one another
in a spirit of brotherhood. (Article 1 of the Universal Declaration of Human Rights)