hugo/docs/content/en/methods/pages/ByTitle.md

title	description	categories	keywords	params
ByTitle	Returns the given page collection sorted by title in ascending order.			functions_and_methods returnType signatures page.Pages PAGES.ByTitle

{{ range .Pages.ByTitle }}
  <h2><a href="{{ .RelPermalink }}">{{ .Title }}</a></h2>
{{ end }}

To sort in descending order:

{{ range .Pages.ByTitle.Reverse }}
  <h2><a href="{{ .RelPermalink }}">{{ .Title }}</a></h2>
{{ end }}