In SharePoint versions before 2010 the default page on a SharePoint site was
a web part page, but from 2010 and above the default page is a wiki page.
You can add text, tables, links, images and also web and app parts to a wiki
page, and you can even link to a SharePoint page that does not exist yet.
On any wiki page you can do wiki linking, which means you can link a page
that does not exist in SharePoint.
In this Links tutorial in the SharePoint Online from Scratch series,
Peter Kalmström, CEO and Systems Designer of kalmstrom.com Business Solutions,
explains different ways to create wiki links.
This is what Peter shows in the demo:
How to create a wiki link and then create the page that the link points
How you can see if a wiki linked page exists or not.
How to link to a particular list.
How to use Ctl + space to link to a view or to a particular item in a