### Task Elements

- <go> tag - The go element can contain one or more postfield elements. If a go element destination is a card within the same deck, all postfield elements are ignored. The go element can also contain one or more setvar elements. Unlike postfield elements, there are no destination limitations on passing information contained in the setvar elements. The <go> nested tags, postfield and setvar, are supported.

Attribute | Value | Description | Comments
--- | --- | --- | ---
href | url | REQUIRED. | SUPPORTED.
accept-charset | Charset_list | A comma- or space-separated list of character encoding the server must be able to process. The default value is “unknown.” | SUPPORTED.
method | post get | Sets how to send the data to the server. Default method is get. When method=get, the data is sent as a request with?data appended to the URL. A get can be used only for a limited amount of data, which is a disadvantage. If you send sensitive information it is displayed on the screen and saved in the Web server's logs. With method=”post”, the data is sent as a request with the data sent in the body of the request. This method has no limit, and sensitive information is not visible. The data sent in a get method is limited to ASCII characters. The data sent in a post method can include non-ASCII characters that are included as part of a value attribute in an <input>, <select>, or <option> tag that is part of the current WML page. | SUPPORTED.
sendreferer | true false | If set to true, the browser sends the URL of the current deck with the request, which allow servers to perform simple access control on decks, based on which decks are linking to them. Default is “false.” | SUPPORTED.

The accept-charset header is: accept-charset: US-ASCII, ISO-8859-1, UTF-8:q=0.1

- <noop> tag - The noop tag dictates that no operation should be done. This tag can be used on the card level to prevent an event that is specified on the deck level by the template element from occurring. This tag can only be contained in either a do or onevent element.

An example of noop is to use a <do> tag to add a “Back” link to the card. When users click the “Back” link, generally they should be taken back to the previous card. However, the <noop> tag prevents this operation. When the user clicks on the “Back” link nothing happens.

- <prev> tag - The prev tag specifies navigation to the previous URL in the history.
- <refresh> tag - The refresh tag specifies a refresh task whereby whatever card is being displayed is refreshed. This task specifies the need for an update of the user agent context as specified by the contained <setvar> elements.This tag can only be nested inside an anchor, do, or onevent element. Xml:lang is not an associated attribute. User-visible side effects of the update can occur during the <refresh> processing.