Work or phrase used to provide a short textual name/description for a structure such as a graphic or figure. The short <alt-text> can be used for special accessibility display or presentation on graphic-limited websites or devices, as an alternative to providing the full graphic (for example, <alt-text> may be used to display a few words “behind” a figure or graphic).
Authoring and Conversion Note: This element is not to be used as a replacement for <caption>, which is a visual element displayed as part of a figure, table, etc. The <alt-text> is not a visual element, unless the figure, caption, or other major element is not available or cannot be processed by the person or device type being addressed. The similarly non-visual element <long-desc> is meant for an extended description.
Text, numbers, or special characters.
<article> <front>... </front> <body>... <sec> <title>Study appraisal and extraction of data</title> ... <p>We identified ... Details of randomisation procedures, treatment schedules, and numbers of patients followed up are given on the <italic>BMJ</italic> website.</p> <fig id="F1"> <caption> <p>Deaths among patients receiving day hospital care or alternative services. Odds ratios of death by end of follow up were calculated by fixed effects model. Heterogeneity between trials is presented as χ<sup>2</sup></p> </caption> <alt-text>Deaths hospital/alternative services</alt-text> <graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="fors2662.f1" alt-version="yes"/> </fig> ...</sec> </body> ...</article>