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Download details: Visual C++ 2005 Keyboard Shortcut Reference Poster

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Socket Debugger

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Transport Specification: MLLP, Release 2 - Annotated

tags: hl7

• HL7 Content Block
  
  
  
  

  
  HL7 content is enclosed by special characters to form a Block.
  The Block format is as follows:
  <SB>dddd<EB><CR>

  
  

  
  

  • <SB>: Start Block character (1 byte).
    ASCII <VT>, i.e., <0x0B>.
    
    
  • dddd: Data (variable number of bytes).
    This is the HL7 data content of the Block.
    The data can contain any single-byte values greater than 0x1F (see below for a discussion of issues related to character
    encodings) and the ASCII carriage return character, <CR>.
    
    
  • <EB>: End Block character (1 byte).
    ASCII <FS>, i.e., <0x1C>.
    
    
  • <CR>: Carriage Return (1 byte).
    ASCII <CR> character, i.e., <0x0D>.
    
    

  
  
  

  
  In pseudo BNF-notation the HL7 Content Block Format is as follows:
  
  HL7-Content-Block = SB, dddd, EB, CR.
  
       dddd = ( printableChar | CR )-sequence.
  
       printableChar = 0x20 | 0x21 | 0x22 | .. | 0xFF.
  
       SB = 0x0B.
  
       EB = 0x1C.
  
       CR = 0x0D.