Some 4gl newbie questions

Hello list! After training on 4gl programming I've got lot of questions to change my old isql forms into 4gl code. Question 1: I'm using many forms with more than one screen. How can I use more than one screen with 4gl without loosing data? Question 2: In my isql forms I'm using LOOKUP fields to get additional data. Which is way to program this in 4gl? Question 3: I want to create forms like this: screen { Name [f01 ] street [f02 ] zip [f03 ] city [f04 ] Additional data from another table [f05] [f06 ] [f07 ] [f05] [f06 ] [f07 ] [f05] [f06 ] [f07 ] [f05] [f06 ] [f07 ] [f05] [f06 ] [f07 ] } tables adress add_data Are there any examples for my questions? Thanx in advance. Dirk Emmermacher