Feedback on UTR#31 (draft 1): Non-Latin Punctuation. I suggest that a small set of non-Latin punctuation marks be added in class . Each one of the punctuation marks that I am suggesting to include complies with the following conditions: 1) It is very similar in shape to an ASCII-range character which is already in class ; 2) It is very similar in function to an ASCII-range character already which is in class ; 3) It is used in the modern orthography of modern languages and/or it is commonly available on national keyboards; 4) It is not commonly used to form words or phrases which may be used as identifiers. In practice, I am suggesting to add the following lines to section "4.1 Proposed Pattern Properties": 037E ; Pattern_Syntax # GREEK QUESTION MARK 0387 ; Pattern_Syntax # GREEK ANO TELEIA 055C..055E ; Pattern_Syntax # ARMENIAN EXCLAMATION MARK..ARMENIAN QUESTION MARK 0589 ; Pattern_Syntax # ARMENIAN FULL STOP 05C0 ; Pattern_Syntax # HEBREW PUNCTUATION PASEQ 05C3 ; Pattern_Syntax # HEBREW PUNCTUATION SOF PASUQ 060C..060D ; Pattern_Syntax # ARABIC COMMA..ARABIC DATE SEPARATOR 061B ; Pattern_Syntax # ARABIC SEMICOLON 061F ; Pattern_Syntax # ARABIC QUESTION MARK 066A..066C ; Pattern_Syntax # ARABIC PERCENT SIGN..ARABIC THOUSANDS SEPARATOR 06D4 ; Pattern_Syntax # ARABIC FULL STOP 066D ; Pattern_Syntax # ARABIC FIVE POINTED STAR 0964..0965 ; Pattern_Syntax # DEVANAGARI DANDA..DEVANAGARI DOUBLE DANDA 10FB ; Pattern_Syntax # GEORGIAN PARAGRAPH SEPARATOR 1362..1368 ; Pattern_Syntax # ETHIOPIC FULL STOP..ETHIOPIC PARAGRAPH SEPARATOR Rationale. Punctuation marks complying with conditions #1 to #3 may easily be cofused with ASCII-range characters which are normally used in the syntax of computer languages and notations. Allowing such character in identifiers would mean to allow identifiers which look almost identical to expressions of a totally different kind. E.g., an identifier such as "return;" (where ";" is U+037E GREEK QUESTION MARK), looks identical to expression "return;" (identifier or keyword "return" + semicolon). However, punctuation marks mentioned in condition #4 (e.g. syllable separators, morpheme separators, abbreviation marks, diacritic marks, apostrophes) are excluded from my suggestion (i.e. I suggest to allow them in identifiers) because they are useful to form words or phrases which may act as identifiers. Character-by-character rationale. In the following list, I listed each suggested character along with the ASCII-range character which looks similar to it (as per condition #1 above) and with the ASCII-range character which has a similar function to it (as per condition #2). Code Cnd.#1 Cnd.#2 Character name 037E ; ? GREEK QUESTION MARK 0387 . ; GREEK ANO TELEIA 055C ~ ! ARMENIAN EXCLAMATION MARK 055D ` , ARMENIAN COMMA 055E ^ ? ARMENIAN QUESTION MARK 0589 : . ARMENIAN FULL STOP 05C0 | ; HEBREW PUNCTUATION PASEQ 05C3 : . HEBREW PUNCTUATION SOF PASUQ 060C , , ARABIC COMMA 060D , , ARABIC DATE SEPARATOR 061B ; ; ARABIC SEMICOLON 061F ? ? ARABIC QUESTION MARK 066A % % ARABIC PERCENT SIGN 066B , . ARABIC DECIMAL SEPARATOR 066C , , ARABIC THOUSANDS SEPARATOR 06D4 _ . ARABIC FULL STOP 066D * * ARABIC FIVE POINTED STAR 0964 | . DEVANAGARI DANDA 0965 | . DEVANAGARI DOUBLE DANDA 10FB : : GEORGIAN PARAGRAPH SEPARATOR 1362 : . ETHIOPIC FULL STOP 1363 : , ETHIOPIC COMMA 1364 : ; ETHIOPIC SEMICOLON 1365 : : ETHIOPIC COLON 1366 : : ETHIOPIC PREFACE COLON 1367 | ? ETHIOPIC QUESTION MARK 1368 : . ETHIOPIC PARAGRAPH SEPARATOR Regards. Marco Cimarosti (marco.cimarosti@europe.com)