clarification needed on markers and codes interaction

FROM: Ján Husarčík <jan.husarcik@gmail.com>

in
http://docs.oasis-open.org/xliff/xliff-core/v2.1/csprd01/xliff-core-v2.1-csprd01.html#annotations
(4.7.3.1.1 Translate Annotation), it's not clear how to correctly use
combination of inline codes and <mrk>.

For example, while
<mrk id="1" translate="no"><pc id="1">bold</pc> text</mrk>

should be equivalent to
<pc id="1"><sm id="n1" translate="no">bold</pc> text<em startRef="m1">

one can choose to implement it as
<mrk id="1" translate="no"><pc id="1" canCopy="no" canDelete="no"
canReorder="no">bold</pc> text</mrk>

would it be possible to provide additional guidance as a Note?