The ``++ismap++`` attribute in an ``++img++`` tag creates a server-side image map: The browser sends the coordinates of the clicked point to the server.
For any person who cannot use a mouse, this form of navigation is inaccessible because it is the position of the cursor on the image that determines the action.
On the other hand, client-side image maps, which use the ``++usemap++`` attribute allow for each clickable area to specify an alternate text, enabling accessibility for the blind.
