Papyrus allows text alignment on external label, that means that when you're editing text, it will be moved on the selected side. You can align text to the left, to the center or to the right.
Example of text alignment to the right:
There is two ways to align text: with the existing button or thanks CSS:
To apply text alignment you can use button. There are available in tree places:
Text alignment can be defined through the CSS attributes "textAlignment" :
Example for Label of Port aligned to the right:
Port > Label { textAlignment:"right"; }
Note: Text alignment of port's label is forced according to the position of its parent when it is constrained.