There is an easy way to organize your caption text in two lines, directly from the flow chart (without changing setup).
Once your flow chart is organized and the text of your caption is indicated in the parameters of your representation module, you will just have to add the characters “\n” when you want to change line.
|Exemple : si vous souhaitez que la légende :||Devienne :|
write the text of your caption as follows: Top world \n oil producers – 2005
This tip will work for any kind of text (tiles, comments etc)