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The content type CMS_IMGDESCR prints alt attribute of a image, which is set through CMS_IMGEDITOR content type.

The usage is very simple. Put CMS_IMGDESCR tag in alt attribute in your module like below.

If you are using more then one CMS_IMGDESCR per article, you have to change/increment index of the next CMS_IMGDESCR .

$descr = "CMS_IMGDESCR[1]";
echo '<img src="path/to/source" alt="'.$descr.'" />';