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WMLScript WMLBrowser Library

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The WMLBrowser library contains functions that can be used to access browser variables.

WMLBrowser Library Functions

Information stored by the browser is often called the browser context. The browser context can contain variables set by a program and variables set by the browser, like the current URL, and the card history stack.

The WML Browser library contains functions to set and access the browser context:

Function Description
getCurrentCard() Returns the (relative) URL of the current card
getVar() Returns the value of a variable
go() Goes to a new card, specified by the new URL, and returns an empty string
newContext() Clears all variables, and returns an empty string
prev() The browser goes back to the previous card, and returns an empty string
refresh() Refreshes the current card, and returns an empty string
setvar() Sets the value of a variable, and returns true if the new value was implemented successfully, and false if not

NOTE: The WML specification states that calls to library functions that are not supported by the browser should return invalid. Because of this, all the above functions should be tested against their return value, and proper action should be taken in case a function returns invalid.

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