My AutoCorrect options haven't changed in years. This is a template I downloaded from ExcelTemplate.net, and the template has this feature programmed in somehow, irrelevant of my AutoCorrect settings in OpenOffice, yet will not carry over into LibreOffice. The template description demonstrates this capitalization of "C", that's how I know it is not connected to my AutoCorrect options since in my options I have nothing listed to correct a lowercase "c" to uppercase. If it was so, wouldn't any "c" I type in any worksheet, cell, etc. be converted to uppercase? Not sure, but I think this is how it would work. No?
If interested, although I have made some additions to the template, that particular column with the "C" functions as I have stated. Here is the link to the template if any want to look into this mystery:
https://exceltemplate.net/budget/checkbook-register/
Just click on the "Yes" to the right of "Free" below the worksheet images to download the template. Thanks again to all of you here.
In God's Harmony