For example, a file named file.bak makes no indication whatsoever as to what type of file it is, so it's hardly an easy decision to know what program can open it.
Dịka ọmụmaatụ, faịlụ a na-akpọ faịlụ.bak anaghị egosi ihe ọ bụla banyere faịlụ ọ bụ, n'ihi ya, ọ bụghị ihe dị mfe ịmara ihe mmemme nwere ike imepe ya.