→Endian

also known as Endianness or Endianess according to →IEC-standardEndianess is the ordering of the bytes within a longer →data type or →variable. 

  • The data values of data in big endian are placed in the memory locations beginning with the leftmost byte first and the rightmost byte last.
  • The data values of data in little endian are placed in the memory locations beginning with the rightmost byte first and the leftmost byte last. 

More information can be found under: http://en.wikipedia.org/wiki/Endianness
Observe that your the endian format of your data is determined by your used 
→target system (see "Properties and restrictions specific to the target system").