===== Error message ids =====

Raakt tests generate the following error messages:

^ Error id (eid)      ^ Description       ^
|missing_title       |The title element is missing. Provide a descriptive title for your document.|
|empty_title         |The title element is empty. Provide a descriptive title for your document.|  
|missing_alt         |Missing alt attribute for image (with src '%s').|
|missing_heading     |Missing first level heading (h1). Provide at least one first level heading describing document content.|
|wrong_h_structure   |Document heading structure is wrong.|
|first_h_not_h1      |The first heading is not h1.|
|has_nested_tables   |You have one or more nested tables.|
|missing_semantics   |You have used %s for visual formatting. Use CSS instead.|
|has_flicker         |You have used <blink> and/or <marquee>. These may create accessibility issues and should be avoided.|
|missing_lang_info   |Document language information is missing. Use the lang attribute on the html element.|
|missing_th          |Missing table headings (th) for table #%s.|
|ambiguous_link_text |One or more links have the same link text ('%s'). Make sure each link is unambiguous.|
|field_missing_label |A field (with id/name '%s') is missing a corresponding label element. Make sure a label exists for all visible fields.|
|missing_frame_title |Missing title attribute for frame with url %s|
|has_meta_refresh    |Client side redirect (meta refresh) detected. Use server side redirection instead.|
|charset_mismatch |The character set specified in the HTTP headers does not match that specified in the markup.|
|embed_used |You have used the embed element. It does not provide a way to express a text representation.|
|wrong_lang_code |You have used a language code ('%s') not recognized in the ISO 639 standard.|
|fieldset_missing_legend |Missing legend element for fieldset #%s.|
|missing_input_alt |Missing alt attribute for image button with id/name '%s'.|
|missing_input_alt_text |Missing alt text for image button with id/name '%s'.|
|missing_area_alt |Missing alt attribute for area with id/name '%s'.|
|missing_area_alt_text |Missing alt text for area with id/name '%s'.|