precedence. Figure 4-1. Root level ATN DIT structure Figure 4-2. ATN organizational DIT structure 4.9 ATN 4.9.1 Matching directory strings for equality and substring 4.9.1.1 Two strings shall match for equality or substring, using a specified matching rule, if and only if: a) they satisfy the syntax specified for the matching rule; and b) they are identical when semantically compared name-by-name for each graphic character in the strings, subject to rules relating to: 1) handling of initial, middle, and final spaces; and 2) case if supported by the used character repertoire, as defined for the corresponding matching rule. 4.9.1.2 The matching of two strings that contain (unknown) characters in an unsupported character set shall be subject to local options. 4.9.1.3 The following character set specific shall apply. 4.9.1.3.1 These rules apply for TeletexStrings, BMPStrings and UniversalStrings. 4.9.1.3.2 with stroke” and Icelandic” map to the same capital with stroke, “small ‘d’ “small ‘eth’, “capital ‘D’ Icelandic both corresponding lower case letters shall be taken as matching. This avoids TeletexString matching ‘eth’” being intransitive. 4.9.1.3.3 The character sigma” shall match Greek letter sigma” and shall map to the same capital “terminal “small Greek letter sigma”. “capital 4.9.1.3.4 The omega and mu Greek letters in 103 shall match corresponding letters in 126. 4.9.1.3.5 The hyphen” shall be ignored for matching purposes. “soft 4.9.1.3.6 The space” shall be taken as equivalent to an ordinary space. “no-break 4.9.1.3.7 The sign” and sign” shall match the corresponding Greek letters. “ohm “micro
precedence. Figure 4-1. Root level ATN DIT structure Figure 4-2. ATN organizational DIT structure 4.9 ATN 4.9.1 Matching directory strings for equality and substring 4.9.1.1 Two strings shall match for equality or substring, using a specified matching rule, if and only if: a) they satisfy the syntax specified for the matching rule; and b) they are identical when semantically compared name-by-name for each graphic character in the strings, subject to rules relating to: 1) handling of initial, middle, and final spaces; and 2) case if supported by the used character repertoire, as defined for the corresponding matching rule. 4.9.1.2 The matching of two strings that contain (unknown) characters in an unsupported character set shall be subject to local options. 4.9.1.3 The following character set specific shall apply. 4.9.1.3.1 These rules apply for TeletexStrings, BMPStrings and UniversalStrings. 4.9.1.3.2 “small ‘d’ with stroke” and “small ‘eth’, Icelandic” map to the same capital “capital ‘D’ with stroke, Icelandic ‘eth’” both corresponding lower case letters shall be taken as matching. This avoids TeletexString matching being intransitive. 4.9.1.3.3 The character “terminal sigma” shall match “small Greek letter sigma” and shall map to the same capital “capital Greek letter sigma”. 4.9.1.3.4 The omega and mu Greek letters in 103 shall match corresponding letters in 126. 4.9.1.3.5 The “soft hyphen” shall be ignored for matching purposes. 4.9.1.3.6 The “no-break space” shall be taken as equivalent to an ordinary space. 4.9.1.3.7 The “ohm sign” and “micro sign” shall match the corresponding Greek letters.