How can I tell how my form and subform are related

How can I tell how my form and subform are related

Hello,
I have a form. On this form I created a subform by dragging the subform button. Then if I remember correctly I used the blank subform. Then I created the fields manually in the subform. But now I would like to know how is the main form and subform related. What if I enter subform records in the wrong record and want to move the subform records to another record? If I new what the related field was and if it was visible I assume I could just change the related field in the subform and the record would move to the appropriate record. Is this how it would work? Kind of like in Access.


Any help on this?


Iram