They probably don't but I did. The goal of this series is to communicate via audio the location of the symbol.

Although looking at the definition it's not a bad word to use.

https://www.thefreedictionary.com/Suffixes.htm

Suffixes are morphemes (specific groups of letters with particular semantic meaning) that are added onto the end of root words to change their meaning. Suffixes are one of the two predominant kinds of affixes&mdash;the other kind is prefixes, which come at the beginning of a root word.