This is your chance to document certain company specifics when writing on a per language basis. For example:
• Punctuation (spacing, type of quote marks used)
• Formatting (bolding, italicizing, trademarks, capitalization)
• Localization (how to deal with currencies, addresses, phone numbers, dates, opening hours, measurements)
• Do you use the informal or formal case (certain languages only)?
• How are titles or product names handled? Are they left in English or translated? How do you handle upper case vs. lower case in a product name or title?