Writing a program to handle <ISINDEX> queries is quite simple. ~~~ an <ISINDEX> so the user can enter a query string. If there is a query string, it ~~~ There are three types of headers:Content-Type:Location:Status:Content-Type:The most often used header is the Content-Type: header, whichinforms the client that it is receiving a document of a given MIME type.Some common types are text/html, and text/plain. ~~

• nacs.uci.edu/X/W6/isindex.html

3.2 ISINDEX. This element tells the browser that the document is an index document. ~~~ Keywords from ISINDEX queries are passed to the server by suffixing, ~~~ Thus if the URL for a document containing an ISINDEXelement was http://www.here.ca/cgi-bin/srchthen typing the word "instructional" into the ISINDEX query window andsubmitting the query would access the URL http://www.here.ca/cgi-bin/srch?instructional 3.2.2 Appropriate Use of ISINDEX The ISINDEX element is usually generated automatically bya server-side script, or gatewayprogram. ~~ . ~~ . ~~

• utoronto.ca/webdocs/HTMLdocs/NewHTML/isindex.html

Parsing a Querystring With Perl - A Simple ISINDEX Query ~~~ For a GET query, we need to figure out how elements are separated. The simplest method is ~~~ . ~~ . ~~ . ~~ . ~~

• devshed.com/c/a/Perl/Parsing-a-Querystring-With-Perl/1

The browser should provide a single line text input field for entering a query string. ~~~ Merely inserting an ISINDEX element does not make the document searchable! ~~~ In practice, limits like 2,048 characters havebeen reported.In practice, the query string is restricted to Latin-1as there is no current mechanism for the URL to specify a characterset for the query.When the query is generated from the input,space characters are mapped to "+" characters, andnormal URL character escaping mechanisms apply. ~~ . ~~ . ~~ . ~~

• cs.tut.fi/~jkorpela/HTML3.2/5.33.html

In a sense, you can think of an ISINDEX document as being a front-end to a some kind of ~~~ Keywords from ISINDEX queries are passed to the server by suffixing, ~~~ In a sense, you can think of an ISINDEXdocument as being a front-end to a some kind of indexing or queryingprogram residing on the HTTP server.3.2.1 Construction of ISINDEX QueryKeywords from ISINDEX queries are passed to the server by suffixing, to the URL from which the document originated,a question mark followed by a list of keywords, separatedby plus signs. ~~ [Book Plug] .................... ~~ . ~~

• umsl.edu/services/summer/basichtm/IntroHTML/isindex.html

The ISINDEX element indicates that the browser must allow the user to ~~~ A METHOD of GET will send the ISINDEX value in a query URL that looks like: URL?value ~~~ Values: Left [DEFAULT] | Center | RightEnctype[2|3|3.2|4] [X1|X1.1] [IE|M|N1-4.x|O] Standards Details: NA Required? No Description: This attribute specifies the MIME media type used to encode the value sent for the ISINDEX element, in case the protocol itself does not impose a format. ~~ A METHOD of GET will send the ISINDEX value in a query URL that looks like:    URL?value where URL is the URL specified by the ACTION attribute, or the current document URL if no ACTION attribute was specified. ~~ Values: CDATASDAPref[2|3|3.2|4] [X1|X1.1] [IE|M|N|O] Standards Details: NA Required? No Description: This is an SGML Document Access (SDA) attribute. ~~ Values: The TARGET reserved names apply.Width[2|3|3.2|4] [X1|X1.1] [IE|M|N|O4-6.x] Standards Details: NA Required? No Description: This attribute explicitly specifies the width of this block element in pixels. ~~

• blooberry.com/indexdot/html/tagpages/i/isindex.htm

CGI C++ source code for ISINDEX queries , based on Dr. Clue's general purpose forms class. . ~~ . ~~ . ~~ . ~~

• drclue.net/F1.cgi/HTML/ISINDEX/ISINDEX.html

3.2.1 Enhancements to ISINDEX. HTML 4.0 introduces the additional attribute PROMPT, which allow the author to specify the prompt string for the ISINDEX query box. ~~~ ToC ~ Up ~ Prev ~ Next ~ Index Introduction to HTML © 1994-1998 by Ian Graham Last Update: 25 March 2000. ~~ . ~~ . ~~ . ~~

• utoronto.ca/webdocs/HTMLdocs/NewHTML/isind2.html

A description of HTML 4's ISINDEX element for input prompts. ~~~ The query string takes the form "?text+of+input+field"; spaces are encoded as " ~~~ . ~~ . ~~ . ~~ . ~~

• htmlhelp.com/reference/html40/block/isindex.html