I have been trying to understand the hex conversion 3!:3
 (see : http://www.jsoftware.com/docs/help701/dictionary/dx003.htm )

but cannot understand what the result is. 
If I define

tohex =: 3!:3 

and I want to choose to represent my  integer in standard byte order hex, I can 
do:

0 tohex 15
which gives, 
e0000000
00000004
00000001
00000000
0000000f

It seems what I want is in the last row (0000000f = 15). But what does all the 
rest mean?
Thanks.
                                          
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