The copy from window to window statement copies the contents of matching fields from one window to another. Non-matching fields are not affected.
copy from window source_window to window destination_window
• source_window – Then name of the window you want to copy the field contents from.
• destination_window – The name of the window you want to copy the field contents to.
Fields are matched based on their field IDs. This means a specific field in the source window and a specific field in the destination window must use the same local or global field resource in order to match.