The header line at the top of the SES
window normally shows the column letter for each column. You can set
it to show a copy of some row, such as a row of column titles, so that
row will always be visible. Default is to set the current row as the
header; use C-u to prompt for header row. Set the header to row 0 to
show column letters again.
Pops up a menu to set the current row as the header, or revert to column letters.
Rename a cell from a standard A1-like name to any string that can be a valid local variable name (See also Nonrelocatable references).
When you interrupt a cell formula update by clicking C-g, then
the cell reference link may be broken, which will jeopardize automatic
cell update when any other cell on which it depends is changed. To
repair that use function