What is the purpose of salt in pie crust?

* Preservative: Salt inhibits the growth of bacteria and microorganisms, which helps to prevent the pie crust from spoiling.

* Tenderizer: Salt breaks down the proteins in gluten, which makes the pie crust more tender and flaky.

* Seasoning: Salt enhances the flavor of the pie crust and its ingredients.

* Moisture control: Salt helps to control the moisture content of the pie crust, preventing it from becoming soggy or dry.