BUR #16440 has been rejected.
mass update dated_commentary symbol-only_commentary -> -symbol-only_commentary
According to Wikipedia, "individual numbers can be represented by symbols, called numerals; for example, '5' is a numeral that represents the number five." But letters are also symbols and we don't seem to tag letters not forming words as symbol-only commentary like in post #2546794.
The symbol-only commentary wiki doesn't mention if commentaries only containing numbers or the date would qualify for the tag. I cannot find any discussion of this, with the closest being forum #192422. The wiki needs to make this clearer, and voting on this BUR will decide if we agree numbers count towards symbol-only commentary or not.