designating letters of the alphabet, including modified letters, ligatured letters and contractions, which stand for letters 

any one of the wordsigns in which a letter represents a word 

the physical area which is occupied by a braille character 

any one of the 64 distinct patterns of six dots, including

the space, which can be expressed in braille 

one or more consecutive braille characters comprising a unit, consisting of a root on its own or a root preceded by one or more prefixes (also referred to as braille symbol) 

a blank cell, or the blank margin at the beginning and end of a braille line 

used interchangeably with braille sign

transcribed using contractions (also referred to as grade 2

braille) 

a braille sign which represents a word or a group of letters 

a two-cell braille sign formed by dots 46 or dots 56 followed by the final letter of the group 

the meaning assigned to a braille sign which would otherwise be read as a contraction or as a numeral (Meanings assigned under special modes such as arrows are not considered grade 1.) 

used interchangeably with uncontracted 

used interchangeably with contracted 

a braille sign that stands for a single print symbol 

a contraction which represents a group of letters 

a braille sign that does not directly represent a print symbol but that indicates how subsequent braille sign(s) are to be interpreted 

a two-cell braille sign formed by dot 5, dots 45 or dots 456 followed by the first letter or groupsign of the word 

any one of a precisely-defined grouping of braille signs used primarily in technical material to establish the extent of certain indicators, such as indices 

an unbroken string of alphabetic signs preceded and followed by non-alphabetic signs, including space 

containing neither dot 1 nor dot 4

a condition initiated by an indicator and describing the effect of the

indicator on subsequent braille signs 

a diacritical mark (such as an accent) normally used in combination with a letter 

the practice of closing indicators in the reverse order of opening 

designating any print or braille symbol, including the space, which is not a letter, modified letter, ligatured letter or contraction 

three or more symbols-sequences

initiates a mode which persists indefinitely until an

explicit terminator is encountered

any one of the seven braille characters having only right-hand dots

(@ ^ _ " . ; ,)orthebraillecharacter#

a single letter, digit, punctuation mark or other print sign

customarily used as an elementary unit of text 

any one of the 56 braille characters, including the space, which is not a prefix 

a contraction consisting of a word specially abbreviated in braille 

condition of being unaccompanied by additional letters, symbols or punctuation except as specified in 2.6, the "standing alone" rule; used to determine when a braille sign is read as a contraction 

designating contractions (other than alphabetic wordsigns) containing dots in both the top and bottom rows and in both the left and right columns of the braille cell 

designating a braille character containing dots in both the top and bottom rows and in both the left and right columns of the braille cell, which therefore is physically unambiguous 

an unbroken string of braille signs, whether alphabetic or non-alphabetic, preceded and followed by space (also referred to as symbols-word) 

a braille sign which marks the end of a mode 

a section of text normally read as a unit (a single paragraph, a single heading at any level, a single item in a list or outline, a stanza of a poem, or other comparable unit), but not "pages" or "lines" in the physical sense that are created simply as an accident of print formatting 

transcribed without contractions (also referred to as grade 1 braille) 

including dot 1 and/or dot 4 

initiates a mode which extends over the next letters- sequence in the case of the capitals indicator or over the next symbols-sequence in the case of other indicators 

a contraction which represents a complete word