The most frequently used approach at Cedar Rapids Iowa KCID is the ILS-27. It now has a notam with a peculiar sentence that I've bolded beliw. I'm wondering what is meant by the prefix "S-" and the suffix "asterisk, asterisk". Here is the notam: ILS OR LOC RUNWAY 27, AMENDMENT 6E ... CHART NOTE: ASTERISK, ASTERISK RVR 1800 AUTHORIZED WITH USE OF FD OR AP OR HUD TO DA. CHANGE S-ILS 27 TO S-ILS 27 ASTERISK, ASTERISK. THIS IS ILS OR LOC RUNWAY 27, AMENDMENT 6F. 12 OCT 12:28 2017 UNTIL PERMANENT. CREATED: 12 OCT 13:03 2017 I flew this approach yesterday, and on the radio the approach controller just called it the "ILS 27" as always. (I was tempted to ask instead for the S-ILS 27 ASTERISK, ASTERISK but I didn't.) I believe I understand the main point of the notam is to announce an amendment that cancels a previous "not authorized" restriction against autocoupled descents that has been on the approach plate for years and is still on the latest one. And maybe they are reducing the visibility requirement as well from RVR 2400 to 1800? But I am at a loss, and so is a local instructor, about what is meant by "S-" and "asterisk, asterisk".