This International Standard specifies basic rules for the design of graphical symbols for product technical documentation, taking into account basic application needs.
JIS Z 8222-1:2006 Referenced Document
JIS X 0201 7-bit and 8-bit coded character sets for information interchange
JIS X 0221-1 Information technology -- Universal Multiple-Octet Coded Character Set (UCS) -- Part 1: Architecture and Basic Multilingual Plane