to periodically count the number of shares still available for any given
file. A more extensive form of checking known as the File Verifier can
download the ciphertext of the target file and perform integrity checks
-(using strong hashes) to make sure the data is stil intact. When the file is
+(using strong hashes) to make sure the data is still intact. When the file is
found to have decayed below some threshold, the File Repairer can be used to
regenerate and re-upload the missing shares. These processes are conceptually
distinct (the repairer is only run if the checker/verifier decides it is