**Problem:**
Instead of adding identical values for many languages, editors will soon be able to add a `mul` Label and Alias in the termbox. It is, however, not immediately obvious, that the `mul` entries will work as fallbacks. Editors will only see "No label defined" which might convince some editors to add the redundant Labels again. We need to make this more intuitive.
**Notes:**
* T329655 does the same thing on desktop
* The reason is that we only allow the language code `mul` for Labels and Aliases and not for descriptions (T313027).
* We only consider `mul` values as intentional fallbacks. So we only use `mul` values as placeholders and not `en` values.
* The placeholders could update live, on publish, or on reload (not ideal, but ok for now).
**Solution:**
If a `mul` label is available, use it as a placeholder for all other existing languages with an empty value.
**Mockups:**
{F37000998}
| [[ https://www.figma.com/file/UMHGYSxln03lGx2z7GxzP2/Multiple-languages?type=design&node-id=340-8642&t=Y283yptnQbwYT2Fi-0 | Link to Figma flow ]] | [[ https://www.figma.com/file/UMHGYSxln03lGx2z7GxzP2/Multiple-languages?type=design&node-id=536-5791&t=Y283yptnQbwYT2Fi-0 | Link to Figma Termbox specs ]] |
**BDD:**
The `mul` Label/Alias is used as a placeholder for all empty Labels/Aliases when the Item is opened for viewing or editing on both desktop and mobile.
GIVEN an Item with a `mul` Label/Alias specified
WHEN the Item is opened for viewing or editing on desktop or mobile
THEN all empty Labels/Aliases are shown with the `mul` Label/Alias as a placeholder (in gray, see mockups)
When an empty Label/Alias is edited the placeholder value disappears on both desktop and mobile.
GIVEN an Item with a `mul` Label/Alias as placeholders
WHEN an empty Label/Alias is edited on desktop or mobile
THEN the placeholder value disappears
**Considerations:**
The current placeholders included in the mobile Termbox present a red color. We guess this decision had to do with making missing information more visible and motivate edits. Nevertheless, once the Multiple languages' functionality is introduced, this doesn't apply anymore: the 'No label defined' copy will be replaced by the MUL label, which might not require any user action. In order to make apparent to editors that this is a placeholder, the color of these texts in the mobile termbox should be updated to #72777d (the standard placeholder color in our products). In order to ensure enough contrast, there are other visual changes that need to be applied to the mobile Termbox. These are all [[ https://www.figma.com/file/UMHGYSxln03lGx2z7GxzP2/Multiple-languages?type=design&node-id=536-5791&t=Y283yptnQbwYT2Fi-0 | specified in Figma ]].FYI, we used this opportunity to apply the styles of the upcoming Codex Accordion component for future consistency and scalability.
**Acceptance criteria:**
[] The `mul` Label/Alias is used as a placeholder for all empty Labels/Aliases when the Item is opened for viewing or editing on mobile (see mockups and BDD).
[] When an empty Label/Alias is edited the placeholder value disappears on mobile (see mockups and BDD).