Plane 1, ranging from 10000 to 1FFFF and called Supplementary Multilingual Plane (SMP), is dedicated to lesser used historic scripts, special-purpose invented scripts and special notations.

• 平面1，从10000到1FFFF，叫做辅助多语言平面（SupplementaryMultilingualPlane,SMP），用于较少使用的古文字，特殊用途的文字和特殊符号。