online help(The capability of many programs and operating systems to display advice or instructions for using their features when so requested by the user, as by a screen button or menu item or a function key)
letter of confirmation(4uzhoj); certificate(a certificate is used to confirm that something has happened or does exist, rather than to confirm that something hasn't happened or doesn't exist.); verification letter(Yeldar Azanbayev); letter of verification(Letters of verification may be issued in lieu of certified copies (HRS §338-14.3). This document verifies the existence of a birth/death/civil union/marriage/divorce certificate on file with the Department of Health and any other information that the applicant provides to be verified relating to the vital event. ART Vancouver); letter(A letter confirms that something has not happened or does not exist, while a certificate confirms that something has happened or does exist • A letter confirming the non-registration for the birth, death, marriage or any other change of civil status.)
to whom it may concern(в некоторых случаях эта фраза пишется вместо заголовка по центру страницы, и её вполне правомерно передать в переводе словом "справка". 4uzhoj)
