views_get_enabled_display_extenders in modules/views/includes/utility.inc
Get enabled display extenders.
views_plugin_display_feed::init in modules/views/plugins/views_plugin_display_feed.inc
views_plugin_display::options_form in modules/views/plugins/views_plugin_display.inc
Provide the default form for setting options.
views_ui_admin_settings_advanced in modules/views_ui/views_ui.admin.inc
Form builder for the advanced admin settings page.
ViewsUiBaseViewsWizard::build_form in modules/views_ui/wizards/views_ui_base_views_wizard.php
For AJAX callbacks to build other elements in the "show" form.
ViewsUiBaseViewsWizard::row_style_options in modules/views_ui/wizards/views_ui_base_views_wizard.php
Add possible row style options.
views_ui_render_display_top in modules/views_ui/views_ui.admin.inc
Render the top of the display so it can be updated during ajax operations.