Editing IBM 3270 (section)

====Orders====
Orders{{sfn|3270 Data Stream|loc=[http://bitsavers.org/pdf/ibm/3270/GA23-0059-4_3270_Data_Stream_Programmers_Reference_Dec88.pdf#page=66 Ch. 4. 3270 Data Stream Orders and Attributes]|pp=44-1—4-28}} consist of the order code byte followed by zero to three bytes of variable information.

{| class="wikitable"
|+ Orders for 3277{{efn|
Later models added
*Start Field Extended (SFE)
*Modify Field (MF)
*Set Attribute (SA)
*Graphic Escape (GE)
}}
|-
! rowspan=2| Order 
! colspan=4| Hexadecimal code (EBCDIC)
! rowspan=2| Description<ref name=CompDesc />
|-
!Byte&nbsp;1 !! Byte 2 !! Byte 3 !! Byte 4 
|-
| Start Field (SF) || 1D || Attribute character<br />(see [[#Attributes|Attributes]]) ||  ||  || Indicates the start of a field at the current buffer position and provides its attribute
|-
| Set Buffer Address (SBA) || 11 || Address byte 1 || Address byte 2 ||  || Specifies a buffer address to become the current buffer position<br />(see [[#Buffer_addressing|Buffer addressing]])
|-
| Insert Cursor (IC) || 13 ||  ||  ||  || Positions the cursor at the current buffer position
|-
| Program Tab (PT) || 05 ||  ||  || || Advances the current buffer address to the first position of the next unprotected field
|-
| Repeat to Address (RA) || 3C || Address byte 1 || Address byte 2 || Character to repeat || Stores the character in byte 4 in all buffer locations starting at the current buffer position up to but not including the specified address and sets the current buffer position to the specified address 
|-
| Erase Unprotected to Address (EUA)|| 12 || Address byte 1 || Address byte 2 ||  || Fills all unprotected fields with nulls starting at the current buffer position up to but not including the specified address
|}