options.php (Settings handler)

• URL: /wp-admin/options.php
• Capability required: Varies by option page; uses option_page_capability_{$option_page} filter and checks manage_network_options on multisite.
• What it does: Processes settings form submissions, validates option pages, and updates options.
• Key hooks: option_page_capability_{$option_page}, allowed_options, enable_post_by_email_configuration.

options-general.php

• URL: /wp-admin/options-general.php
• Capability required: manage_options.
• What it does: General site settings (title, tagline, URL, admin email, timezone, language).
• Key hooks: date_formats, time_formats.

options-writing.php

• URL: /wp-admin/options-writing.php
• Capability required: manage_options.
• What it does: Writing settings (default categories, post formats, post-by-email, update services).
• Key hooks: enable_post_by_email_configuration, enable_update_services_configuration.

options-reading.php

• URL: /wp-admin/options-reading.php
• Capability required: manage_options.
• What it does: Reading settings (front page display, blog pages, RSS, search visibility).
• Key hooks: blog_privacy_selector.

options-discussion.php

• URL: /wp-admin/options-discussion.php
• Capability required: manage_options.
• What it does: Discussion settings (comments, avatars, moderation).
• Key hooks: thread_comments_depth_max, default_avatar_select, avatar_defaults.

options-media.php

• URL: /wp-admin/options-media.php
• Capability required: manage_options.
• What it does: Media settings (image sizes, uploads, organization).
• Key hooks: (none in file).

options-permalink.php

• URL: /wp-admin/options-permalink.php
• Capability required: manage_options.
• What it does: Permalink settings and rewrite rules.
• Key hooks: available_permalink_structure_tags.

options-privacy.php

• URL: /wp-admin/options-privacy.php
• Capability required: manage_privacy_options.
• What it does: Privacy policy page settings and related guidance.
• Key hooks: (none in file).