Somewhere in the documentation for FlexCat, is a question why - I think this was about future plans. - FlexCat would need the option to indicate the the dimensions of a string. I can't answer that question THERE, not being part of the team, but minimal size is to make sure a text is visible, especially in a busy interface, and more importantly, the maximum size is to make sure that the thetextwillfitintheinterfaceeevenifitisunexpectedinsize.
Having the option to pass that information on to the translator, just makes things easier for everyone.