Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

- $ -

$_api : urlShorten
$_app : classes_comments_renderer , classes_like_cache , classes_like_composite
$_area : classes_like_composite , classes_like_cache
$_cache : classes_comments_renderer
$_canCompressCookies : classItemMarking
$_classes : ipsGallery
$_comments : public_ccs_ajax_comments
$_count : IPSSearch
$_currentRecord : comments_ccs_records
$_data : supportRequest
$_expire : classes_like_cache
$_ext : gallery_image
$_furlTemplates : IPSLib
$_imageCount : gallery_image
$_lims : IPSLib
$_mainDir : urlShorten
$_maxPostDate : public_forums_forums_topics
$_navCache : gallery_image
$_noGuestMarking : classItemMarking
$_output : version_upgrade
$_parentRemap : comments_core_reports , comments_blog_entries , comments_calendar_events , comments_ccs_records
$_plugInClass : classCaptcha
$_remap : comments_ccs_records , comments_core_reports , comments_blog_entries , comments_calendar_events
$_result : comments_ccs_records
$_results : IPSSearch
$_sdPids : public_forums_forums_topics
$_searchConfigs : IPSLib
$_settings : classes_comments_renderer
$_stickCookie : public_blog_display_list
$_useCookies : classItemMarking
$_view_type : public_blog_display_list
$acceptable : admin_downloads_index_stats
$allowed_files : admin_blog_customize_custom
$api_error : apiCore
$app : classes_cache_simple , classes_like_registry , classes_tag_abstract
$apps : classes_like
$appSearch : ipsRegistry
$area : classes_like_registry
$attach_pids : apiTopicView
$bootstraps : classes_like_registry
$cache : calendarPermissionsSync , downloadsPermissionsSync
$cachedVersions : admin_core_applications_hooks
$category : comments_ccs_records
$charlesTables : task_item
$class : task_item
$count : classes_like_registry
$currentValue : nexusCustomFieldText , nexusCustomFieldDropdown , nexusCustomFieldUser , nexusCustomFieldFtp
$data : package , classGraph , customer
$database : comments_ccs_records
$defaultPath : admin_ccs_ajax_media
$deleteTime : task_item
$editor : admin_core_settings_settings
$entryWithAttachments : public_blog_display_list
$errors : urlShorten
$fields : comments_ccs_records , classes_archive_reader
$filter : public_blog_display_list
$first : public_blog_display_list
$footerCode : IPSAdCodeNexus
$form_code : admin_core_applications_applications , admin_core_logs_logsSplash , admin_core_logs_tasklogs , admin_core_report_reports , admin_core_system_taskmanager , admin_forums_archive_archive , admin_members_members_banfilters , admin_members_members_members , admin_members_warnings_actions , admin_members_warnings_reasons , admin_blog_blogs_manage , admin_blog_cblocks_manage , admin_blog_customize_custom , admin_blog_overview_overview , admin_blog_tools_akismet , admin_blog_tools_pings , admin_blog_tools_rebuild , admin_ccs_ajax_media , admin_ccs_templates_blocks , admin_downloads_categories_categories , admin_downloads_customize_cfields , admin_downloads_customize_mimetypes , admin_downloads_index_overview , admin_downloads_index_stats , admin_downloads_tools_bulkimport , admin_downloads_tools_tools , admin_gallery_albums_manage , admin_gallery_overview_overview , admin_gallery_overview_settings , admin_gallery_stats_stats
$form_code_js : admin_downloads_customize_mimetypes , admin_downloads_index_overview , admin_downloads_index_stats , admin_downloads_tools_bulkimport , admin_downloads_tools_tools , admin_gallery_albums_manage , admin_gallery_overview_overview , admin_gallery_overview_settings , admin_gallery_stats_stats , admin_core_applications_applications , admin_core_logs_logsSplash , admin_core_logs_tasklogs , admin_core_report_reports , admin_core_system_taskmanager , admin_forums_archive_archive , admin_members_members_banfilters , admin_members_members_members , admin_members_warnings_actions , admin_members_warnings_reasons , admin_blog_blogs_manage , admin_blog_cblocks_manage , admin_blog_customize_custom , admin_blog_overview_overview , admin_blog_tools_akismet , admin_blog_tools_pings , admin_blog_tools_rebuild , admin_ccs_ajax_media , admin_ccs_templates_blocks , admin_downloads_categories_categories , admin_downloads_customize_cfields
$forums : plugin_forums_deletedtopics , plugin_forums_unapprovedtopics
$headerCode : IPSAdCodeNexus
$hours : task_item
$html : admin_core_applications_applications , admin_core_logs_logsSplash , admin_core_logs_tasklogs , admin_core_report_reports , admin_core_system_taskmanager , admin_forums_archive_archive , admin_members_members_banfilters , admin_members_members_members , admin_members_warnings_actions , admin_members_warnings_reasons , admin_blog_blogs_manage , admin_blog_cblocks_manage , admin_blog_customize_custom , admin_blog_overview_overview , admin_blog_tools_akismet , admin_blog_tools_pings , admin_blog_tools_rebuild , admin_calendar_icalendar_ical , admin_ccs_ajax_media , admin_ccs_templates_blocks , admin_downloads_categories_categories , admin_downloads_customize_cfields , admin_downloads_customize_mimetypes , admin_downloads_index_overview , admin_downloads_index_stats , admin_downloads_tools_bulkimport , admin_downloads_tools_tools , admin_gallery_albums_manage , admin_gallery_overview_overview , admin_gallery_overview_settings , admin_gallery_stats_stats
$icons : admin_ccs_ajax_media
$importWarning : Minify
$lasttime : admin_downloads_tools_bulkimport
$likeCache : classes_like_composite
$limit : task_item , admin_downloads_index_stats
$loadLimit : task_item
$max_results : public_blog_display_list
$maxAmounts : gatewayCore , gateway_authnet , gateway_paypal , gateway_paypalpro
$name_box : public_blog_display_list
$nav : public_gallery_images_review , public_gallery_post_image
$output : public_gallery_images_review , public_gallery_post_image
$overridePurchase : supportRequest
$path_to_ipb : apiCore
$permissions : public_forums_forums_forums , public_forums_forums_topics
$ping_errormsg : task_item
$pingservices : task_item
$registry : plugin_members_banned , apiCore , messages_plugin , profiles_plugin , session_api , cp_skin_emoticons , like_ccs_composite , cp_skin_calendar , plugin_gallery_images , cp_skin_hooks_export , plugin_gallery_albums , cp_skin_banfilters , cp_skin_database_categories , cp_skin_performance , cp_skin_member , cp_skin_revisions , cb_search , cb_visitors , cp_skin_gallery , navigation_gallery , cp_skin_ranks , cp_skin_spiderlogs , cp_skin_blocks_custom , cp_skin_blocks , plugin_gallery_gallerycomments , cp_skin_restrictions , app_gallery_classes_hooks , cp_skin_blocks_feed , cb_active_users , reportNotifications , plugin_gallery_galleryimages , cp_skin_ccsglobal , cb_twitter , navigation_ccs , ccsHooks , cp_skin_gallery_group_form , plugin_members_iplookup , cb_last_entries , cp_skin_databases , cp_skin_database_records , cp_skin_templates , cp_skin_attachments , cb_categories , cp_skin_filemanager , plugin_downloads_brokenfiles , cb_mybloglog , cp_skin_pages , plugin_calendar_unapprovedevents , like_calendar_calendars_composite , cp_skin_database_fields , cb_last_comments , plugin_ipchat_chatbanned , cb_mypicture , plugin_members_modposts , cb_rand_album_image , cb_tags , plugin_members_restrictposts , like_downloads_categories_composite , plugin_forums_announcements , cp_skin_forums , cp_skin_mediamanager , plugin_blog_entries , classes_like_cache , cp_skin_group_form , cp_skin_rss , cp_skin_member_form , plugin_forums_deletedposts , cp_skin_database_moderators , plugin_ccs_deletedrecords , plugin_members_suspended , cp_skin_bulkimport , plugin_downloads_files , forums_hookGateway , cp_skin_multimods , galleryProfilePhotoAlbum , cp_skin_categories , cp_skin_archive , plugin_forums_unapprovedtopics , plugin_forums_deletedtopics , cp_skin_idm_download_category_form , like_forums_topics_composite , plugin_downloads_unapprovedfiles , hooksFunctions , cp_skin_warnlogs , cp_skin_tools , like_blog_blog_composite , customFields , cp_skin_overview , cp_skin_rebuild , cp_skin_blog , cp_skin_mycp , publicSessions__gallery , cp_skin_group_core , blogthis , sl_googleplusone , like_gallery_images_composite , cp_skin_adminlogs , cp_skin_idm_nexus , admin_group_form__core , cp_skin_blog_group_form , like_gallery_albums_composite , cp_skin_emailerrorlogs , cp_skin_errorlogs , cp_skin_help_files , plugin_ccs_ccscomments , plugin_ccs_unapprovedrecords , boardIndexFeaturedEntry , cp_skin_reports , ipsGallery , cp_skin_spamlogs , cp_skin_sql , gallery_upload , cp_skin_idm_group_form , reportLibrary , plugin_downloads_idmcomments , like_calendar_events_composite , cp_skin_menu , cp_skin_chat , navigation_forums , classes_like_composite , plugin_forums_unapprovedposts , cp_skin_api , cp_skin_security , core_hookGateway , cp_skin_blocks_plugin , task_item , cp_skin_settings , cp_skin_articles , cp_skin_setup , cp_skin_applications , cp_skin_mobilelogs , plugin_ccs_ccsdeletedcomments , cp_skin_qanda , cp_skin_bulkmail , cp_skin_stats , cp_skin_profilefields , post_plugin , members_hookGateway , like_forums_forums_composite , cb_calendar , cp_skin_system , cb_google_shared_items , like_blog_entries_composite , cp_skin_modlogs , cp_skin_mimetypes , blogFunctions , contentBlocks , like_downloads_files_composite , blogRssImport , cp_skin_badwords , plugin_calendar_events , cp_skin_bbcode , navigation_core , default_plugin , plugin_core_attachments , plugin_members_warn , cp_skin_member_form_blog , cb_custom , plugin_blog_draftentries , cb_friends , cp_skin_reputation , cb_albums , cp_skin_cfields , cb_admin_block , cp_skin_permissions , navigation_downloads , cp_skin_notifications
$results : admin_ccs_ajax_media
$sort_key : public_blog_display_list
$sort_order : public_blog_display_list
$tab_name : admin_group_form__downloads , admin_download_category_form__downloads , admin_group_form__forums , admin_member_form__blog , admin_group_form__blog , admin_group_form__core
$tabKeys : admin_core_ajax_tabs
$tagsClass : public_blog_display_list
$takeAction : invoice
$task : task_item
$term : admin_ccs_ajax_media
$text : admin_downloads_index_stats
$thumbSizes : ipsGallery
$title : public_gallery_images_review , public_gallery_post_image
$topic : comments_ccs_records
$topic_list_config : apiTopicView
$topicData : app_forums_classes_topics
$traffic : admin_downloads_index_stats
$transferMode : classFtp
$type : admin_downloads_index_stats
$types : package
$uploaderHoursBehind : Minify
$useForums : comments_ccs_records
$valid_types : admin_downloads_tools_bulkimport