"Alt text" refers to a textual description added to an image that explains its content for users with visual impairments who rely on screen readers, while "tab order" defines the sequence in which interactive elements on a webpage are navigated using the keyboard's tab key, ensuring a logical flow for users to access information.
Alt text (alternative text) is used to provide a textual description of the visual content for users relying on screen readers. In this case, configuring alt text ensures that a summary of the bar chart (e.g., “Sales by country”) can be read out by a screen reader, making the data accessible.
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