---
title: Predefined message keys
slug: experience/predefined-message-keys
docTags:
createdAt: 2026-06-02T15:34:05.160Z
---
# Predefined message keys in PXP
The Purple experience uses a set of predefined message keys that allow you to customize all user-facing text in your app. Find a list below.
## Bookmarks
Keys controlling the bookmarks feature - the list view, deletion dialogs, and creation date display.
| Key | Default Value | Notes |
| -------------------------------------- | ----------------------------------------------------------------- | ------------------------------------------- |
| `APP_BAR_TITLE_BOOKMARKS` | Bookmarks | Title in the app bar when viewing bookmarks |
| `BOOKMARKS_TITLE` | Your bookmarks | Page heading |
| `BOOKMARK_CREATION_DATE_MESSAGE` | Added on %s | `%s` = formatted date string |
| `BOOKMARK_PAGE_LABEL` | Page | Label prefix for page-level bookmarks |
| `BOOKMARK_PAGE_LABEL_MESSAGE` | Page %s | `%s` = page number |
| `BOOKMARK_NO_RESULTS` | There are no bookmarks. | Empty state message |
| `BOOKMARK_ERROR` | Error loading bookmarks | Error state heading |
| `BOOKMARK_ERROR_BUTTON` | Reload | Button label for reload on error |
| `BOOKMARK_CUSTOM_MESSAGE_SINGULAR` | 1 bookmark | Count label - singular |
| `BOOKMARK_CUSTOM_MESSAGE_PLURAL` | %s bookmarks | `%s` = count; used for 2 or more |
| `ARTICLE_BOOKMARKS_TITLE` | Articles | Section heading for article bookmarks |
| `ARTICLE_BOOKMARKS_MESSAGE_SINGULAR` | 1 article bookmarked | Count label - singular |
| `ARTICLE_BOOKMARKS_MESSAGE_PLURAL` | %s articles bookmarked | `%s` = count |
| `BUTTON_DELETE_ALL_BOOKMARKS` | Delete all bookmarks | Button label |
| `BOOKMARK_DELETE_TITLE` | Delete bookmark | Dialog title |
| `BOOKMARK_DELETE_MESSAGE` | Are you sure you want to delete this bookmark? | Dialog body (no title known) |
| `BOOKMARK_DELETE_MESSAGE_WITH_TITLE` | Are you sure you want to delete the bookmark for "%s"? | `%s` = bookmark title |
| `BOOKMARK_DELETE_All_TITLE` | Delete bookmarks | Dialog title for bulk delete |
| `BOOKMARK_DELETE_ALL_MESSAGE` | Are you sure you want to delete all bookmarks? | Bulk delete dialog body |
| `BOOKMARK_DELETE_ALL_OF_ISSUE_MESSAGE` | Are you sure you want to delete all bookmarks for the issue "%s"? | `%s` = issue name |
| `BOOKMARK_DELETE_CANCEL` | Cancel | Cancel button in delete dialog |
| `BOOKMARK_DELETE_CONFIRM` | Delete | Confirm button in delete dialog |
## Issues and Downloads
Keys for the issue list, issue detail view, download dialogs, and update prompts.
| Key | Default Value | Notes |
| ----------------------------------- | ----------------------------------------------------------------------------------------------------- | ------------------------------------------------- |
| `ISSUE_TITLE` | %s | `%s` = issue title |
| `ISSUE_DESCRIPTION` | %s | `%s` = issue description body |
| `ISSUE_DESCRIPTION_TOGGLE_EXPAND` | more | Expand toggle label |
| `ISSUE_DESCRIPTION_TOGGLE_COLLAPSE` | collapse | Collapse toggle label |
| `ISSUE_PUBLICATION_TITLE` | %s | `%s` = publication name |
| `ISSUE_MORE` | Read article | CTA button on issue tile |
| `ISSUE_NOT_FOUND` | The requested content could not be found. | 404 state |
| `ISSUE_ERROR` | Error loading issue data | Error state heading |
| `ISSUE_ERROR_BUTTON` | Try again | Reload button |
| `ISSUE_UPDATE_BADGE_MESSAGE` | Update available | Badge text on issue tile |
| `ISSUE_UPDATE_TITLE` | Update available | Dialog title |
| `ISSUE_UPDATE_MESSAGE` | A new version of this issue "%s" is available. Would you like to read the old version or the new one? | `%s` = issue name |
| `ISSUE_UPDATE_OLD_VERSION` | Read old version | Dialog button |
| `ISSUE_UPDATE_NEW_VERSION` | Read new version | Dialog button |
| `ISSUE_DELETE_TITLE` | Delete issue | Dialog title |
| `ISSUE_DELETE_MESSAGE` | Do you really want to delete the issue %s? | `%s` = issue name |
| `ISSUE_DELETE_CONFIRM` | Delete | Confirm button |
| `ISSUE_DELETE_CANCEL` | Cancel | Cancel button |
| `ISSUE_DOWNLOAD_CONFIRM_TITLE` | Download issue | Dialog title |
| `ISSUE_DOWNLOAD_CONFIRM_MESSAGE` | Downloading issue "%(issue.name)s"? | `%(issue.name)s` = issue name (named placeholder) |
| `ISSUE_DOWNLOAD_CONFIRM_OK` | OK | Confirm button |
| `ISSUE_DOWNLOAD_CONFIRM_CANCEL` | Cancel | Cancel button |
| `ISSUE_ACTION_READ` | Read | Issue action button |
| `ISSUE_ACTION_DOWNLOAD` | Download | Issue action button |
| `ISSUE_ACTION_DOWNLOADING` | Downloading... | Issue action button (in progress state) |
| `ISSUE_ACTION_PREVIEW` | Preview | Issue action button |
| `ISSUE_ACTION_PURCHASE` | Purchase for %s | `%s` = price string |
| `ISSUE_ACTION_PURCHASE_LOADING` | Loading price... | Shown while price is fetched |
| `ISSUE_ACTION_PURCHASE_UNAVAILABLE` | Price not available | Shown when price cannot be retrieved |
| `ISSUE_ACTION_SUBSCRIBE` | Subscribe | Issue action button |
| `ISSUE_ACTION_LOGIN` | Login | Issue action button (requires login) |
| `ISSUE_ACTION_COUPON` | Coupon | Issue action button |
| `ISSUE_ACTION_CANCEL` | Cancel | Issue action button |
| `ISSUE_ACTION_DELETE` | Delete | Issue action button |
| `ISSUE_ACTION_DELETE_BOOKMARKS` | Delete all for this issue | Issue action button |
## Subscriptions
Keys for the subscription store screen, pricing display, and subscription management.
| Key | Default Value | Notes |
| ------------------------------------------------ | ----------------------------------------------------- | ---------------------------------------------------------------------------- |
| `PUBLICATION_SUBSCRIPTIONS_TITLE` | Subscriptions for | Screen heading (publication name appended) |
| `PUBLICATION_SUBSCRIPTIONS_HEADER` | Introduction text regarding subscriptions | Introductory text block - replace with your own copy |
| `PUBLICATION_SUBSCRIPTIONS_FOOTER` | `Terms of use Terms of use go here` | Footer HTML block - replace with your legal terms |
| `PUBLICATION_SUBSCRIPTIONS_MANAGE_SUBSCRIPTIONS` | Manage Subscriptions | Link/button label |
| `PUBLICATION_SUBSCRIPTIONS_RESTORE_PURCHASES` | Restore Purchases | Button label |
| `SUBSCRIPTION_TITLE` | %s | `%s` = subscription product name |
| `SUBSCRIPTION_DESCRIPTION` | %s | `%s` = subscription description |
| `SUBSCRIPTION_PRICE` | %s | `%s` = price string |
| `SUBSCRIPTION_ACTION_PURCHASE` | Purchase for %s | `%s` = price string |
| `SUBSCRIPTION_ACTION_PURCHASE_UNAVAILABLE` | Price not available | Shown when price cannot be loaded |
| `SUBSCRIPTION_PRICE_TRIAL` | Free for %1$s %2$s | `%1$s` = duration number, `%2$s` = unit (e.g. days) |
| `SUBSCRIPTION_PRICE_DISCOUNT` | Try %1$s x %2$s %3$s for %4$s | `%1$s` = count, `%2$s` = duration, `%3$s` = unit, `%4$s` = discounted price |
| `SUBSCRIPTION_PRICE_INTRODUCTORY` | Try %1$s x %2$s %3$s for %4$s | Same placeholders as discount price |
| `SUBSCRIPTION_PRICE_FINAL` | Then %1$s / %2$s %3$s | `%1$s` = regular price, `%2$s` = duration, `%3$s` = unit |
| `SUBSCRIPTION_ISSUES_PROMOTION` | %1$s issues for %2$s. | `%1$s` = issue count, `%2$s` = price |
| `SUBSCRIPTION_ISSUES_ADDITIONAL_PROMOTION` | %1$s issues for the price of %2$s. Was %3$s Now %4$s. | `%1$s` = count, `%2$s` = new price, `%3$s` = old price, `%4$s` = final price |
| `RESTORE_PURCHASES_BUTTON` | Restore purchases | Button label (standalone) |
| `RESTORE_PURCHASES_TEASER` | Already a subscriber? | Teaser text above restore button |
## Vouchers and Coupon Codes
Keys for the voucher redemption screen.
| Key | Default Value | Notes |
| ---------------------------------- | ------------------------------------------------------------------------------ | -------------------------------------- |
| `COUPON_TITLE` | Voucher | Screen/section title |
| `COUPON_CODE_TITLE` | Enter voucher code | Input field label |
| `COUPON_CODE_PLACEHOLDER` | VOUCHER CODE | Input placeholder text |
| `COUPON_SUBMIT_BUTTON` | Redeem voucher | Submit button |
| `COUPON_TEASER` | `Redeem your voucher here
If you've received a promotional voucher...` | Introductory text block; supports HTML |
| `COUPON_ACTIVATED_TITLE` | Your activated voucher codes | Heading for the list of active codes |
| `COUPON_DEACTIVATE_BUTTON` | Delete | Button to remove a code |
| `COUPON_DEACTIVATE_TITLE` | Deactivate voucher code | Dialog title |
| `COUPON_DEACTIVATE_MESSAGE` | Do you really want to deactivate the code %s? | `%s` = coupon code |
| `COUPON_DEACTIVATE_BUTTON_CONFIRM` | OK | Confirm button |
| `COUPON_DEACTIVATE_BUTTON_CANCEL` | Cancel | Cancel button |
| `COUPON_VALID_TITLE` | Add voucher | Success dialog title |
| `COUPON_VALID_MESSAGE` | The code you entered is valid. | Success dialog body |
| `COUPON_VALID_BUTTON_OK` | OK | Success dialog confirm |
| `COUPON_VALID_BUTTON_CANCEL` | Cancel | Success dialog cancel |
## Login and Logout
Keys for the login form and logout confirmation.
| Key | Default Value | Notes |
| ---------------------------- | ---------------------------------------------------- | -------------------------------------- |
| `LOGIN_TITLE` | Login | Screen title |
| `LOGIN_TEASER` | Log in for more content | Teaser text above the form |
| `LOGIN_TEASER_RELOGIN` | You have been logged out. Please log in again. | Shown after session expiry |
| `LOGIN_USERNAME_PLACEHOLDER` | Email | Username field placeholder |
| `LOGIN_PASSWORD_PLACEHOLDER` | Password | Password field placeholder |
| `LOGIN_SUBMIT_BUTTON` | Log in | Submit button |
| `LOGIN_HELP` | Forgotten your password? `recover` | Helper text; supports HTML with a link |
| `LOGIN_LOGOUT_TITLE` | Logout | Logout confirm dialog title |
| `LOGIN_LOGOUT_TEASER` | Do you really want to logout? | Logout confirm dialog body |
| `LOGIN_LOGOUT_BUTTON` | Log out | Logout button label |
| `LOGOUT_TITLE` | Logout | Alternative logout dialog title |
| `LOGOUT_MESSAGE` | Do you really want to logout? | Alternative logout dialog body |
| `LOGOUT_BUTTON_CONFIRM` | Logout | Confirm button |
| `LOGOUT_BUTTON_CANCEL` | Cancel | Cancel button |
## Search
Keys for the search screen and results display.
| Key | Default Value | Notes |
| ---------------------------------- | --------------------------------------------------------------------- | ------------------------------------ |
| `SEARCH_FIELD_PLACEHOLDER` | Search... | Input placeholder |
| `SEARCH_RESULT_TITLE` | %s results | `%s` = result count |
| `SEARCH_RESULT_EMPTY_TITLE` | no results | Heading when nothing is found |
| `SEARCH_RESULT_NO_RESULT` | No content was found for your search phrase "%1$s". Please try again. | `%1$s` = search term |
| `SEARCH_RESULT_NO_SEARCH` | Please enter a search phrase. | Shown before any search is submitted |
| `SEARCH_RESULT_PAGE_LABEL_MESSAGE` | Page %s | `%s` = page number in result |
| `SEARCH_RESULT_PAGE_HIT_EXCERPT` | %s | `%s` = matching excerpt text |
| `SEARCH_RESULT_TOGGLE_EXPAND` | Show more | Show more results button |
| `SEARCH_RESULT_TOGGLE_COLLAPSE` | Collapse | Collapse results button |
## Navigation
Keys for bottom navigation labels and section headings.
| Key | Default Value | Notes |
| --------------------------------- | --------------- | ------------------------------- |
| `NAVIGATION_HOME` | Home | Bottom nav tab |
| `NAVIGATION_NEWSSTAND` | Newsstand | Bottom nav tab |
| `NAVIGATION_FEED` | Newsfeed | Bottom nav tab |
| `NAVIGATION_SEARCH` | Search | Bottom nav tab |
| `HOME_LIST_TITLE` | Latest Articles | Section heading on home screen |
| `HOME_SWIPER_TITLE` | Latest Issues | Section heading on home screen |
| `TOGGLE_PUBLICATION_TYPE_CHANNEL` | Articles | Toggle label for article view |
| `TOGGLE_PUBLICATION_TYPE_KIOSK` | Issues | Toggle label for issue view |
| `DROPDOWN_CATEGORY_RESET` | Show All | Category filter reset option |
| `DROPDOWN_ISSUE_STATE_RESET` | All Issues | Issue state filter - all |
| `DROPDOWN_ISSUE_STATE_PURCHASED` | My Issues | Issue state filter - purchased |
| `DROPDOWN_ISSUE_STATE_LOCAL` | My Downloads | Issue state filter - downloaded |
## List and Dialog Controls
Generic keys that are used across list views, expandable content, and modal dialogs.
| Key | Default Value | Notes |
| -------------------------------------- | --------------------------------------------------- | --------------------------------------- |
| `LIST_NO_RESULTS` | There are no contents matching the filter criteria. | Empty state |
| `LIST_ERROR` | Error loading data. %s | `%s` = error detail |
| `LIST_ERROR_BUTTON` | Reload | Reload button on list error |
| `LIST_ENTRY_TOGGLE_EXPAND` | Show %u more | `%u` = count of hidden items |
| `LIST_ENTRY_TOGGLE_COLLAPSE` | Show %u less | `%u` = count |
| `LIST_ENTRIES_TOGGLE_EXPAND` | Show %u more | Same as above; used in grouped contexts |
| `LIST_ENTRIES_TOGGLE_COLLAPSE` | Show %u less | Same as above |
| `LIST_GROUPED_ENTRY_TOGGLE_EXPAND` | Show %u more | Grouped entry expand |
| `LIST_GROUPED_ENTRY_TOGGLE_COLLAPSE` | Show %u less | Grouped entry collapse |
| `LIST_GROUPED_ENTRIES_TOGGLE_EXPAND` | Show %u more | Grouped entries expand |
| `LIST_GROUPED_ENTRIES_TOGGLE_COLLAPSE` | Show %u less | Grouped entries collapse |
| `LIST_ACTION_SELECT_ALL` | Select all | Bulk action |
| `LIST_ACTION_UNSELECT_ALL` | Deselect all | Bulk action |
| `LIST_ACTION_CONFIRM` | Confirm | Bulk action confirm |
| `LIST_ACTION_RESET` | Reset | Bulk action reset |
| `DIALOG_TITLE` | Dialog | Generic dialog title fallback |
| `DIALOG_ERROR` | Error | Generic error dialog title fallback |
| `PULL_TO_REFRESH_PULL` | Pull to refresh | Pull-to-refresh hint |
| `PULL_TO_REFRESH_RELEASE` | Release to refresh | Pull-to-refresh release hint |
| `MENU_ITEM` | %s | `%s` = menu item label |
| `VIEW_ERROR` | Error loading data. %s | `%s` = error detail |
| `VIEW_ERROR_BUTTON` | Reload | Reload button on view error |
## Error Messages
Keys for all user-facing error notifications. Most accept a `%s` placeholder for a technical error detail that can be appended to the message.
| Key | Default Value | Notes |
| ---------------------------------------- | ---------------------------------------------------------------- | ---------------------------------------------- |
| `ERROR_LOGIN` | The login could not be performed. %s | `%s` = error detail |
| `ERROR_PURCHASE` | The purchase could not be completed. %s | `%s` = error detail |
| `ERROR_SUBSCRIPTION` | The subscription could not be purchased. Please try again later. | |
| `ERROR_PRODUCT` | Product data could not be loaded. %s | `%s` = error detail |
| `ERROR_DOWNLOAD` | Download failed for %2$s. %1$s | `%1$s` = error detail, `%2$s` = item name |
| `ERROR_CONTENT_OPEN` | Error opening content. %s | `%s` = error detail |
| `ERROR_PREVIEW_OPEN` | Error opening preview. %s | `%s` = error detail |
| `ERROR_DEEP_LINK_LANDING` | Shared issue could not be opened. %s | `%s` = error detail |
| `ERROR_SEARCH` | The search could not be performed. Please try again later | |
| `ERROR_SHARE` | Content could not be shared. | |
| `ERROR_ADD_BOOKMARK` | Bookmark could not be created. %1$s | `%1$s` = error detail |
| `ERROR_DELETE_BOOKMARK` | This bookmark could not be deleted. %s | `%s` = error detail |
| `ERROR_DELETE_BOOKMARK_WITH_TITLE` | The bookmark for "%2$s" could not be deleted. %1$s | `%1$s` = error detail, `%2$s` = bookmark title |
| `ERROR_DELETE_ALL_BOOKMARKS` | Not all bookmarks could be deleted. %s | `%s` = error detail |
| `ERROR_COUPON_INVALID` | The code you entered is not valid. | |
| `ERROR_COUPON_INVALID_BUTTON` | OK | Dialog button |
| `ERROR_COUPON_EXISTS` | This code is already added. | |
| `ERROR_COUPON_EXISTS_BUTTON` | OK | Dialog button |
| `ERROR_COUPON_OFFLINE` | No internet connection! This code could not be added. | |
| `ERROR_COUPON_OFFLINE_BUTTON` | OK | Dialog button |
| `ERROR_COUPON_DEACTIVATE` | This code could not be deactivated. | |
| `ERROR_COUPON_DEACTIVATE_BUTTON` | OK | Dialog button |
| `ERROR_COUPON_DEACTIVATE_OFFLINE` | No internet connection! This code could not be deactivated. | |
| `ERROR_COUPON_DEACTIVATE_OFFLINE_BUTTON` | OK | Dialog button |
| `ERROR_COUPON_DEACTIVATE_UNKNOWN` | Code is unknown! This code could not be deactivated. | |
| `ERROR_COUPON_DEACTIVATE_UNKNOWN_BUTTON` | OK | Dialog button |
## System and Access Messages
Generic system messages for authentication state, connectivity, and unknown errors.
| Key | Default Value | Notes |
| --------------------- | --------------------------------------------- | --------------------------------------------------- |
| `ACCESS_DENIED` | Access denied. | Shown when content requires a subscription or login |
| `PAYMENT_REQUIRED` | Access denied. | Shown when payment is required to access content |
| `NOT_LOGGED_IN` | You are not logged in. | |
| `ALREADY_LOGGED_IN` | You are already logged in. | |
| `ALREADY_OWNED` | You already own this product. | |
| `INVALID_CREDENTIALS` | Please check your username and password. | |
| `NETWORK` | Please check your internet connection. | Offline / connectivity error |
| `NOT_FOUND` | The requested content could not be found. | |
| `NO_ISSUES_FOUND` | The requested content could not be found. | |
| `RESOURCE_NOT_FOUND` | The requested resource could not be found. | |
| `UNKNOWN_OFFER` | The requested offer could not be found. | |
| `UNKNOWN_PRODUCT` | The requested product could not be found. | |
| `UNKNOWN_VENDOR` | Vendor is unknown. | |
| `UNKNOWN` | An unknown error occurred. | Generic fallback error |
| `CANCELLED` | Process was cancelled by user. | |
| `CONFIGURATION_ERROR` | Error in remote system. | |
| `INSUFFICIENT_SPACE` | The storage on your device is not sufficient. | Shown during downloads |
| `VALIDATION_FAILED` | The purchase could not be validated. | |
## Article Content (Extended)
These keys are available in apps using the extended storefront and control article detail page elements, sponsorship labels and custom post types.
| Key | Default Value | Notes |
| ----------------------------------------- | ------------------------------------------------------------- | --------------------------------- |
| `ARTICLE_CONTENT_PUBLICATION_DATE` | Published: %1s at %2s | `%1s` = date, `%2s` = time |
| `ARTICLE_CONTENT_TAG_HEADLINE` | Tags | Label above tag list |
| `ARTICLE_SPONSOR_TEXT_SPONSORED` | Sponsored by `` | `%s` = sponsor name; HTML allowed |
| `ARTICLE_SPONSOR_TEXT_NATIVE_ADVERTORIAL` | Partnered content with `` | `%s` = sponsor name |
| `ARTICLE_SPONSOR_TEXT_NATIVE_TRUE` | Partnered content with `` | `%s` = sponsor name |
| `ARTICLE_SPONSORED_BRAND` | Advertisement feature with %s | `%s` = brand name |
| `ARTICLE_SPONSOR_TEXT` | Advertisement feature with %s | `%s` = sponsor name |
| `READ_TIME` | %s min read | `%s` = estimated minutes |
| `AUTHOR_ARTICLES_HEADLINE` | Recent articles by %s | `%s` = author name |
| `HERO_ARTICLE_BUTTON` | Read more | CTA on hero article tile |
| `TAXONOMY_LATEST_ARTICLES_HEADLINE` | What's new? | Heading on taxonomy/tag pages |
## Content and Catalog Items
Keys for the Content component, which displays generic catalog items such as articles, chapters, episodes, or any non-issue content type. The Content component is separate from the Issue component - both support similar action patterns but have independent sets of message keys, so you can customize their labels independently.
| Key | Default Value | Notes |
| ------------------------------------- | -------------------------- | ----------------------------------------------------------------------------------------- |
| `CONTENT_TITLE` | %s | `%s` = content title |
| `CONTENT_DESCRIPTION` | %s | `%s` = content description body |
| `CONTENT_PUBLICATION_TITLE` | %s | `%s` = publication name |
| `CONTENT_DESCRIPTION_TOGGLE_EXPAND` | Show more | Expand toggle for long descriptions |
| `CONTENT_DESCRIPTION_TOGGLE_COLLAPSE` | Show less | Collapse toggle for long descriptions |
| `CONTENT_ERROR` | Error loading content data | Error state heading |
| `CONTENT_ERROR_BUTTON` | Try again | Reload button on error state |
| `CONTENT_UPDATE_BADGE_MESSAGE` | Update available | Badge text on content tile |
| `CONTENT_ACTION_READ` | Read | Action button - content is unlocked |
| `CONTENT_ACTION_SUBSCRIBE` | Subscribe | Action button - locked content, subscription option available |
| `CONTENT_ACTION_LOGIN` | Login | Action button - locked content, login required; only shown when the user is not logged in |
| `CONTENT_ACTION_COUPON` | Coupon | Action button - locked content, coupon entry option available |
| `CONTENT_ACTION_PURCHASE` | Purchase for %s | Action button - locked content, single purchase available; `%s` = formatted price |
| `CONTENT_ACTION_PURCHASE_LOADING` | Loading price... | Shown while the price is being fetched from the store |
| `CONTENT_ACTION_PURCHASE_UNAVAILABLE` | Price not available | Shown when the price cannot be loaded (missing product ID or store configuration error) |
## PDF Downloads
The keys label the download button variants: full PDF, single page, and left/right page of a two-page spread.
| Key | Default Value | Notes |
| --------------------------- | -------------------- | -------------------------- |
| `DOWNLOAD_PDF_FULL` | Download full PDF | Button label |
| `DOWNLOAD_PDF_SINGLE` | Download single page | Button label |
| `DOWNLOAD_PDF_SINGLE_LEFT` | Download left page | Button label (spread view) |
| `DOWNLOAD_PDF_SINGLE_RIGHT` | Download right page | Button label (spread view) |
# Placeholder Syntax Reference
Purple message keys use **sprintf-js** style placeholders:
| Syntax | Meaning | Example |
| -------------- | -------------------------------------------------- | -------------------- |
| `%s` | Single string value | `Added on %s` |
| `%u` | Unsigned integer | `Show %u more` |
| `%1$s`, `%2$s` | Positional string (for reordering in translations) | `%1$s error in %2$s` |
| `%(name)s` | Named placeholder | `%(issue.name)s` |
When writing translations, always preserve placeholder tokens exactly - including the `$` and position number where present.