From what I can tell isindex was some kind of search element designed to search the contents of the current page, via the server? A bit like the <input type="se

From what I can tell isindex was some kind of search element designed to search the contents of the current page, via the server? A bit like the <input type="search"> of today? Would you say this search I have here is similar to isindex? https://www.lloydatkinson.net/articles/ https://www.lloydatkinson.net/articles/