excel forumula calculation when spreadsheet opens

I was playing with functions and hyper links in tables and trying to export them to excel.

I came across this question: https://datatables.net/forums/discussion/42097

that lead me to try to find how to get them to auto evaluate.

it occurred to me that in python I'm using XLSXwritter and the forumals work there, so what are they doing?

I found this tidbit:

that lead me to this: https://stackoverflow.com/questions/18355691/set-xlsx-to-recalculate-formulae-on-open

the good part is this:

so the question is do you set

<calcPr fullCalcOnLoad="1"/>