The D nokeypad command deletes a specified number of entities.
Format: [+|-][count]D[+|-][count][+|-]entity
If the entity is C, W, BW, EW, L, BL, EL, or NL, the last entity deleted
by the command is saved in the delete buffer associated with the entity
and can be restored with the UNDC, UNDW, or UNDL nokeypad command.
Ex: D15C Deletes 15 characters in the current direction.
DSR Deletes the select range.
DBR Deletes to the beginning of the buffer.