Directory tree 

  • EXT:my_sitepackage/Resources/Private/Templates/

    • Layouts

      • Default.html
      • WithoutHeader.html

    • Pages

      • Default.html
      • StartPage.html
      • TwoColumns.html
      • With_sidebar.html

    • Partials

      • Footer.html
      • Sidebar.html
      • Menu.html

Directory structure of a typo3 extension 

  • composer.json
  • ext_conf_template.txt
  • ext_emconf.php
  • ext_localconf.php
  • ext_tables.php
  • ext_tables.sql
  • ext_tables_static+adt.sql
  • ext_typoscript_constants.typoscript
  • ext_typoscript_setup.typoscript
  • Classes

  • Configuration

    • Backend

    • Extbase

      • Persistence
    • TCA
    • TsConfig
    • TypoScript
    • ContentSecurityPolicies.php
    • Icons.php
    • page.tsconfig
    • RequestMiddlewares.php
    • Services.yaml
    • user.tsconfig
  • Documentation

  • Resources

    • Private

      • Language
    • Public
  • Tests