diff --git a/ACCESSIBILITY.md b/ACCESSIBILITY.md
index a84bc4530..be2299f0e 100644
--- a/ACCESSIBILITY.md
+++ b/ACCESSIBILITY.md
@@ -16,7 +16,7 @@ Symbols used in this document:
- π Partial support
- β No appreciable support
-## Cross-Browser Compatibility
+## Browser Compatibility
As a web app, iD's browser support is fundamental. The user experience should be
as equivalent as possible across the latest versions of all modern browsers on all
@@ -38,7 +38,7 @@ elsewhere in this document.
[#7132]: https://github.com/openstreetmap/iD/issues/7132
-## Multilingual Support
+## Language Support
English is the language of tags and relation roles in the OpenStreetMap database.
It's also the source language of iD's interface, meaning English is the only language
@@ -52,7 +52,10 @@ for more info.
| | Localization Feature | Notes |
|---|---|---|
-| β
| Detect the browser's locale | |
+| β
| Browser language preference | iD tries to use the language set in the browser |
+| β | Base language fallback | E.g. if `pt_BR` is incomplete, `pt` should be tried before `en` |
+| β | Custom fallback language | If the preferred language is incomplete, a user-specified one should be tried before `en` (e.g. `kk` β `ru`) |
+| β
| Locale URL parameters | `locale` and `rtl` can be used to manually set iD's locale preferences. See the [API](API.md#url-parameters) |
| π© | Right-to-left layouts | Infrequently tested. Used for languages like Hebrew and Arabic |
### Translatability
@@ -65,7 +68,7 @@ translated to one or more languages.
|---|---|---|
| β
| Labels and descriptions | |
| β
| Help docs and walkthrough | |
-| β
| Letter hotkeys | e.g. S for Straighten makes sense in English, but not every language |
+| β
| Letter hotkeys | E.g. S for Straighten makes sense in English, but not every language |
| β
| Preset names and search terms | |
| π | Fields | Combo fields may show raw tag values. The Wikipedia field lists Wiki names in their native languages |
| β | Tags | OpenStreetMap tags are English-only as a limitation of the database |
@@ -78,6 +81,13 @@ translated to one or more languages.
| β
| ImproveOSM issues | |
| β
| Osmose issues | Translated strings are [provided by Osmose](https://www.transifex.com/openstreetmap-france/osmose/) itself, not iD |
+### Language Coverage
+
+The completion percentages for iD translations constantly change, and so are not
+listed here. Visit the [Transifex project page](https://www.transifex.com/openstreetmap/id-editor/)
+to see the latest numbers. Typically a few languages (German, Spanish, Japaneseβ¦)
+are kept close to 100% coverage, while most languages have less than 50% coverage.
+
---
_Further sections coming soonβ¦_