The XLSForm format include the interpretation of markdown that allows richer text format, alike bold, but also line break.
However, the online form editor in KoboToolBox not only does not interpret those markdown, but also remove the line break in case the text is edited in it.
Line break are entered in Excel with the Alt+Enter keyboard shortcut.
It would therefore be great to have this included into the KoboToolBox online form editor.