• Words that are completely in uppercase, such as "USA". This is convenient for users who want, for example, to avoid spell checking land use or other types of codes or abbreviations that are supposed to be in uppercase.
• Lower case words starting with an uppercase letter. This would be useful to skip spell checking proper words, such as names of cities, counties or individuals.
• Words in mixed casings. This is typically useful if the map contains technical jargon such as YearToDate.
• Words with numbers (digits). For example, District5 or Y2K.
• Words without letters such as telephone numbers.
• Internet addresses (URLs) such as website or email addresses.

The MapSpeller spelling engine will automatically ignore the following characters when

• Appended to a correctly-spelled word
• Delineated by spaces on each side: ~!#$^&*()_+`=-[]{};':"<>?,./|\

If those characters are attached to a misspelled word, they are however considered part of that word and listed as such in the Potential Typos dialog.