b3270 Attr Indication

### attr Indication

Describes changed screen attributes over a region, with the text remaining the same. Always nested inside of a row element. If a particular screen attribute is not specified by this element, then it stays the same.

Attribute | Always present? | Purpose
--- | --- | ---
column | yes | Column number, with 1 at the left
count | yes | Number of affected columns
fg | no | Foreground color
bg | no | Background color
gr | no | Graphic rendition

See screen for an example.

b3270: Protocol - Operations - Indications