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GUIDE TO FLOOD INSURANCE RATE MAPS 7 community may exercise extraterritorial jurisdiction (ETJ) over land use in areas beyond its corporate limits, Where appropriate, ETJ limits are shown and labeled on the Index. J. North Arrow Orients the map and helps map users determine property locations. K. Effective or Revised Date IHold FIRMs Onlyl The effective date of the FIRM, This date appears below the words "Effective Date:" or "Map Revised:", "Map Revised:" indicates that one or more panels of the FIRM have been revised at least once, l. Panel,Not,Printed Note Identifies panels included in the FIRM layout that are not printed and explains why they are not printed, The note is preceeded by an asterisk or other reference symbol, which also appears next to the appropriate panel number, community'panel number, or map number (see Item Pl. M. Inset Note Identifies areas of the mapped community for which panels have not been created, Such areas are usually small and do not warrant the creation of a panel. These areas are shown as insets (i.e" small, separate maps) on printed panels. The note idenlifies the panel on which the inset is shown, N. Flood Prone Street Index IN ewer Z, Fold FIRMs Only) Lists the streets within the mapped community that are partially or completely within the SFHA and the panel or panels on which each street is shown. Also listed for each street are grid coordinates that allow the map user to locate the street on the panel (see "Key Elements of the FIRM Panel;' Item 33), For multiple,panel FIRMs, the Flood Prone Street I ndex is shown either on the Index or, when the number of flood, prone streets is large, on a separate panel. When the FIRM consists of only one panel, the Flood Prone Street Index is shown on that panel. O. Flood Prone Area Overview (Newer Z, Fold FIRMs OnlYI Provides a generalized depiction of the SFHAs shown on the individual FIRM panels, Because the delineations of SFHAs on the Index are generalized, they are intended only to help the map user find the appropriate FIRM panel; they are not to be used in place of the more detailed delineations shown on the FIRM panels, P. Panel Number/Community,Panel Number/Map Number A panel number appears within each panel shown on a Flat FIRM Index; a community,panel number appears within each panel shown on a non,countywide Hold FIRM Index; and a map number appears within each panel shown on a countywide Hold FIRM Index. Each of these three elements serves the same purpose on an Index: it identifies the FIRM panel that covers the indicated portion of the mapped community, On Hold FIRM indexes, the community, panel number or map number shown for each panel is followed by a letter suffix, which is increased alphabetically each lime that panel is revised.