Menu Command:	Tools > Options...
Shortcuts:

The Validation Options Dialogue Box

Validation: Auto-validate when opening files

Automatically validates XML files when they are opened. Also checks XML, XML Schema, XSLT and DTD files for well-formedness when they are opened.

Validation: Auto-validate when saving files

Automatically validates XML files when they are saved. Also checks XML, XML Schema, XSLT and DTD files for well-formedness when they are saved.

Validation: Jump to error on validation

Scrolls the document you are validating (which includes a well-formedness check) to the error location.

Validation: Beep on validation errors

Beeps when an error has been found in the file(s) you are validating (which includes a well-formedness check).

Validation Engine: Validation Engine to use

Allows you to choose a validation engine. All of the MSXML engines you have installed on your computer will be displayed in this drop-down list.