EA top-level constant

String const EA

Erase In Area.

Representation: CSI s \x4F

Parameter default value: s = 0

If the DEVICE COMPONENT SELECT MODE (DCSM) is set to PRESENTATION, EA causes some or all character positions in the active qualified area (the qualified area in the presentation component which contains the active presentation position) to be put into the erased state, depending on the parameter values:

  • 0 - the active presentation position and the character positions up to the end of the qualified area are put into the erased state
  • 1 - the character positions from the beginning of the qualified area up to and including the active presentation position are put into the erased state
  • 2 - all character positions of the qualified area are put into the erased state

If the DEVICE COMPONENT SELECT MODE (DCSM) is set to DATA, EA causes some or all character positions in the active qualified area (the qualified area in the data component which contains the active data position) to be put into the erased state, depending on the parameter values:

  • 0 - the active data position and the character positions up to the end of the qualified area are put into the erased state
  • 1 - the character positions from the beginning of the qualified area up to and including the active data position are put into the erased state
  • 2 - all character positions of the qualified area are put into the erased state

Whether the character positions of protected areas are put into the erased state, or the character positions of unprotected areas only, depends on the setting of the ERASURE MODE (ERM).

Implementation

const String EA = 'O';