Using rich translatable strings
Within the schema, any string defined with type nlsRichString or nlsRichVelocityString is a translatable string that can contain HTML tags. Not all HTML tags (and their attributes) are supported, though tags for headings, tables, lists, hyperlinks, and text formatting are available.
The allowable tags are: h1, h2, h3, h4, h5, h6, ol, ul, dl, dt, dd, li, br, p, hr, table, th, td (with the frame, rules, and width attributes), tr, caption, colgroup, col, thead, tbody, tfoot, i, b, u, em, strong, cite, code, samp, kbd, pre, tt, sub, sup, big, small
To specify a hyperlink, use the anchor (<a>) tag. When clicked, the hyperlink opens a new tab or window, based on the user’s browser settings. You can specify the href attribute only. To include an ampersand character (&) in the URL, enclose the symbol in quotes: "&". Also, include the protocol with the URL. For example, a value of "http://www.ibm.com" is correct, but "www.ibm.com" is not.