ulrich-merkel said sometimes, on can only implement functionality with the help of unifields. A very popular one is to fill the windows clipboard with some text. This is done with a macro of some features only supported in unifields. I just transfered an existing application to 10201f108 and it's great to say: UNIFIELDS STILL WORK IN U10! Greetings from a colde Frankfurt/Germany morning, Uli  

ummm, yes. There was never any intention to remove them. 

but as we have seen with UGETAMES, sometimes such a bug happens without any intention. And as these macros are coupled with the structure editor, there is a risk that this would not work under U10. http://unifaceinfo.com/forum/uniface-deployment-1/discussion-about-unifield-and-edit-box-functionalities/#p6050546