Test basic inheritance Test relative unit (em). Resolved to absolute value? Test percentage resolution. Resolved to absolute value? Test smaller font-size. Test larger font-size. Test smaller than a percentage font-size. Computation (see org.apache.fop.fo.properties.FontSizePropertyMaker): 12pt * 80% = 9,6pt (base-size) 9,6pt < 12pt, so scale is 10/12 12 * 10/12 = 9,99pt, still > 9,6pt 9,99pt * 10/12 = 8,33pt STOP