What is the significance of the ‘[R-]’ notation after MPEP 212 [Reserved]?

The ‘[R-]’ notation after ‘MPEP 212 [Reserved]’ typically indicates that this section has been revised. However, in this case, since the section is reserved and empty, the ‘[R-]’ may be a placeholder for future revision dates. When a substantive revision occurs, a date is usually added after the ‘R’, such as ‘[R-10.2019]’ to indicate an October 2019 revision.