When auto-adding machine translation or source text to the translation column, the references are adapted quite nicely.

If the user deletes the auto-inserted text, there is no way to re-add the references.

When clicking a reference in the source column, there must be a button on the reference card to add the reference manually from the source column to the translation column.

Design details

• When clicking a reference in the source text, it should become highlighted and the focus should not be lost. Just like it happens with links.
• When a reference card is shown and it does not exist in the target, an option to add reference should be provided in the reference card. Just like it happens with links.
• If possible, the added reference in the translation should behave as an atomic element:
  • It should not be possible to change the label (unlike links, it does not make sense to change "[1]" to be anything else). Actions on an added reference should be edit (when supported) and remove (which will remove the whole thing, not leaving a text version of "[1]").
  • When a reference is added to the text, it is important that the cursor is placed after it in a way that typing does not write in superscript.