b3270 erase Indication

### erase Indication

Screen was erased and possibly resized.

Attribute | Always present? | Purpose
--- | --- | ---
logical-rows | no | Current number of rows
logical-cols | no | Current number of columns
fg | no | Foreground color for entire screen
bg | no | Background color for entire screen

The foreground and background colors are present only in color mode.

A new set of logical-rows and logical-cols values indicates a switch between 3270 primary and alternate display modes. (Primary is 24 rows of 80 columns, alternate may be larger.) Some user interfaces may choose to switch window sizes or fonts in response to this switch.

The erased state of a screen not explicitly given by this indication is:

- Blank
- No graphic rendition attributes
- Cursor at 1, 1 (upper left)

At start-up, the window is assumed to be full-size (the alternate 3270 size).

Example:

    <erase/>

b3270: Protocol - Operations - Indications