The default page information is for the button which will direct the user back to the main page of the SPA. Specify it's name and the message which will navigate to the page.

For HTTP errors and other broken states.

For HTTP errors and other broken states, where link goes to "/".

For the not found page.

For pages the user does not have access to.

ReturnTo just needs the name of the page the user will be returned to. Reload displays default text to reload the current page. Custom is to add flexibility to the button.