We could imagine using a global base store to serve to keep global constants.
Example: I use a VAT RATE in all my formulas, and want to use it as a litteral in formulas definition instead of typing the actual value.
Instead of creating a formula with {Amount}*0.2 , we could use instead : {Amount}*VAT
Where VAT is defined in a key/value store at database level:
VAT = 0.2
Thanks.