Where is the rationale that results in the use of enclosing parentheses for addition of
<![if !supportLists]>· <![endif]>Fuller form of name (18.104.22.168)
<![if !supportLists]>· <![endif]>Profession or Occupation (22.214.171.124)
<![if !supportLists]>· <![endif]>Other Designation (126.96.36.199)
but a preceding comma for addition of
<![if !supportLists]>· <![endif]>Title or Other Designation Associated with the Person (188.8.131.52)
<![if !supportLists]>· <![endif]>Date of Birth and/or Death (184.108.40.206)
<![if !supportLists]>· <![endif]>Other Term of Rank, Honour, or Office (220.127.116.11)
Is this just legacy punctuation from earlier codes, ones that endowed punctuation with bibliographic significance? Perhaps such usage is documented in the minutes of a committee somewhere.
Here's one source in which I didn't find such information:
PCC Post RDA Test Guidelines
Moreover, I submit to you that the distinction between "professor" as an occupation versus as a term of rank, etc. is too nice for practical use. But it reflects, to a degree, differing semantic fields between British and American usage. I dare say German usage differs yet further.
Sincerely - Ian
Cataloging and Metadata Services Librarian
George Mason University