Re-written February 2019
cformat switch: #
Indicates that the column contains numeric data, which affects the way the column is sorted, the type of Auto-Filtering that would be applied by default, and causes negative values to display automatically in red unless overridden by the NegFgBg option.
Note that the # code does not prevent the display of non-numeric characters, nor does it automatically format them or even right-justify them. For these additional effects, see the > code and the Mask option. For editable cells, the # code only allows the input of numeric digits, so you may want to add the . and - codes to explicitly allow the entry of decimal points and minus signs—and/or use Mask.
Note also that the # switch has a lower priority that the A switch.
