Now, a field is an OBJECT. Go up to the OBJECTS menu and look at the five things listed there. They are all objects. Select each one of them. Click on the top middle square in the Toolbox, then select "Button Info.." from the OBJECTS menu. See? It's just like the field box. And the script window will be exactly the same, too. Close the Button box and select the other objects. All objects are alike. STACKS contain BACK-GROUNDS. BACKGROUNDS contain CARDS. CARDS contain BUTTONS and FIELDS.
Do you have more questions? Write them down! See if you can find out the answers by yourself. Then continue to the next card...