A changes indication is a JSON-specific b3270 protocol object that describes the text or attributes that have changed in a particular row. An array of changes objects is an element of an rows indication.
|column||yes||number||Starting column number, with 1 at the left|
|count||no||number||Number of affected columns|
Either a text or count member is always present, but never both. If text is present, then both the displayed text and the attributes have changed. If it is not present, then only the attributes have changed.
For an example, see the screen indication.