You can now use default for translation-tags, where the default will be used when working in a language that doesn’t have a translation-tag.
Example:
{% comment %}Some translations{% endcomment %}
{% t= "t_alarmbelprocedure" nl:"De alarmbelprocedure is van toepassing." en:"The alarmbelprocedure is applicable." default:"The alarmbelprocedure is applicable." %}
{% t "t_alarmbelprocedure" %}
So when I would work in French, the translation would read The alarmbelprocedure is applicable.
which is the default.