Images in titles

Images in topic, figure, and other titles, while technically valid, should not be used.

Although other title elements (including section titles) can technically contain images and figures (in that images within topic and section titles are valid DITA), these structures should be avoided. Titles are used for purposes other than simply rendering headings in the output, and in some uses (such as for running headers in page layout outputs) images in titles will produce undesirable or unintended results.