Super/Subscript Characters (1.0E. Language and script of the description )
If the super/subscript placement of a character is not essential to avoid serious distortion or loss of intelligibility (e.g., 
, 
, 
), record the super/subscript character on the line in the regular manner (e.g., no., 2e). If a period is associated with the super/subscript letter (e.g., 
) and the characters are the abbreviation of a single word, record the period as the last element (e.g., Ma.). In case of serious distortion or loss of intelligibility, record the character in super/subscript position for all such characters available in the character set, namely, Arabic numerals (0-9), the minus sign ( - ), parentheses ( ( ) ), and the plus sign ( + ). In all other cases use the double underscore convention described in the section on Special Letters, Diacritical Marks, and Punctuation Marks
. Give the letter being represented in upper or lower case according to the source.
See also:
1.0E. Language and script of the description
