Editing Decimal separator (section)

===Exceptions to digit grouping===
The International Bureau of Weights and Measures states that "when there are only four digits before or after the decimal marker, it is customary not to use a space to isolate a single digit."<ref name=BIPM/> Likewise, some [[Style guide|manuals of style]] state that thousands separators should not be used in normal text for numbers from {{val|1000}} to {{val|9999}} where no decimal fractional part is shown (or, in other words, for four-digit whole numbers), whereas others use thousands separators and others use both. For example, [[APA style]] stipulates a thousands separator for "most figures of {{val|1000}} or more" except for page numbers, binary digits, temperatures, etc.

There are always "common-sense" country-specific exceptions to digit grouping, such as year numbers, [[postal code]]s, and ID numbers of predefined nongrouped format, which style guides usually point out.