Often, the word that the erroneous letter appeared in is not indicated by the typer, leaving a bit of guesswork for the reader. However '-' should generally be limited for use only where minor typographical errors have occured to avoid this potential confusion.
Guy: Hey, did you watch that showq?
Dude: Yeah, it was awsesmomet
Guy: Awesome, perhaps?
Millennial B: Not sure bud. It's either a minus sign or that thing some idiots put between 1 and D.