The columns of Note G

Number of operation
Which step, and in what order.
Nature of operation
Which operation is performed.
Variables acted upon
What the operation reads.
Variables receiving results
What the operation writes.
Indication of change
What changes in the store.
Statement of results
What the result should be.
The column headings of Note G's table The printed 1843 diagram, with its header row lifted out and magnified, and each column named in turn: which step, which operation, what it reads, what it writes, what changes, and what the result should be. Note G's table, read as a specification The printed diagram, 1843 [P2a]. Step and order Which operation What it reads What it writes What changes in the store What the result should be The column headings, lifted from the sheet above Every operation says which step it is, what it reads, what it writes, and what its result should be. So every line can be checked on its own.