Maximum table size

Is our maximum table size limited by the maximum block number?

With our block number maximum of:
#define MaxBlockNumber                  ((BlockNumber) 0xFFFFFFFE)
0xFFFFFFFE = 4294967294

would the max table size really be (4GB * 8k) or 32 TB, not 16TB, as
listed in the FAQ:4.5) What is the maximum size for a row, a table, and a database?...    Maximum size for a table?
          16 TB
 

Is the 16TB number a hold-over from when we weren't sure block number
was unsigned, though now we are pretty sure it is handled as unsigned
consistenly?

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