Your product must be capable of implementing appropriate defaults or local customs for punctuation and spacing of words, sentences, paragraphs, chapters, and all other conventional text components.
In North America, it is common to use two spaces after a period before the beginning of the next sentence. This is not the practice in some European countries. Punctuation symbols also vary among languages.
Guideline C10
Allow the user to select the sentence spacing and punctuation characters. |
Example: In Spanish, questions are commonly bracketed by two question marks, the first of which is inverted, for example, ¿Habla usted Español?.
Arabic and Hebrew scripts are written from right to left. As a result their punctuation marks would appear on the left side of the sentences. Some of the meanings are also reversed because of their writing directions.
Example: In Arabic, the closing square bracket is [ and the opening square bracket is ]. Arabic punctuation marks also differ from English counterparts.
Example: Arabic punctuation marks that correspond to the percent, asterisk, comma, question mark, and semicolon.
Figure 3: Arabic Punctuation Marks | 
