ISO 5426 ("Extension of the Latin alphabet coded character set for bibliographic information interchange") is a character set developed by ISO,[1] similar to ISO/IEC 6937.
[2] ISO 5426-2 ("Latin characters used in minor European languages and obsolete typography") is a second part to ISO 5426, published in 1996.
[4] It specifies a set of 70 characters, some of which do not exist in Unicode.
][clarification needed] Michael Everson proposed the missing characters in Unicode 3.0, but some were postponed for further study.
P with middle tilde is an error for P with squirrel tail.