(b) Content; designation of index. A notice of pendency shall state the names of the parties to the action, the object of the action and a description of the property affected. A notice of pendency filed with a clerk who maintains a block index shall contain a designation of the number of each block on the land map of the county which is affected by the notice. Except in an action for partition a notice of pendency filed with a clerk who does not maintain a block index shall contain a designation of the names of each defendant against whom the notice is directed to be indexed.
(c) Indexing. Each county clerk with whom a notice of pendency is filed shall immediately record it and index it against the blocks or names designated. A county clerk who does not maintain a block index shall index a notice of pendency of an action for partition against the names of each plaintiff and each defendant not designated as wholly fictitious.
(d) Electronic indexing. A county clerk may adopt a new indexing system utilizing electro-mechanical, electronic or any other method he deems suitable for maintaining the indexes.