I don't mean writing out a URL... You could name pages like "Home", "About", "My trip to Paris". And then write on the piece of paper "[link to My trip to Pari

I don't mean writing out a URL... You could name pages like "Home", "About", "My trip to Paris". And then write on the piece of paper "[link to My trip to Paris]" Or you could write "[link from Posts]" to add it to a common listing. You'd basically just create a written form of Markdown.