html-widget-can-go-back

Arguments: html-widget

Returns true if there is a previous page in the chain of recently-visited pages of the specified html-widget, to which you could return by calling html-widget-go-back.

Implementation note: there appears to be no way to implement this function on Windows, and it may not be working properly on Linux, so this function may go away. The function was intended to indicate whether a Go Back button should currently be enabled.

See the html-widget control.

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This page was not revised from the 10.0 page.
Created 2019.8.20.