The allowable contents for a note is described in the help text for the note editor (by clicking the blue information circle in the toolbar). Specifically, the only allowable HTML tags are: "u, strong, em, b, i, p, code, pre, tt, output, samp, kbd, var, sub, sup, strike, font, dfn, cite, big, small, address, hr, br, div, span, h1, h2, h3, h4, h5, h6, ul, ol, li, dt, dd, abbr, acronym, a, img, blockquote, del, ins, fieldset, and legend". Any other tag present in the note will be stripped out before being saved, as with the dl tag you are trying to use.
Hope this helps,
Shaun
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Shaun Salzberg
drop.io/shaunsh...@dropio.com(732) 718-9617