Objdump output

[andy@softbookpress.com]

I have a couple of questions about objdump -output
1.
"
Program Header:
    LOAD off    0x00008000 vaddr 0xc0038000 paddr 0xc0038000 align 2**15
         filesz 0x000aa234 memsz 0x000c4270 flags rwx
"
What is LOAD off ?


2.
"
Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text.init    0000054c  c0038000  c0038000  00008000  2**5
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .data.init    00000328  c003854c  c003854c  0000854c  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  2 .text.real    00090190  c0039000  c0039000  00009000  2**5
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  3 .rodata       000098e4  c00c9190  c00c9190  00099190  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  4 __ex_table    00000ce0  c00d2a80  c00d2a80  000a2a80  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  5 .data         0000e234  c00d4000  c00d4000  000a4000  2**5
                  CONTENTS, ALLOC, LOAD, DATA
  6 .bss          0001a030  c00e2240  c00e2240  000b2240  2**4
                  ALLOC
  7 .stab         001ef57c  00000000  00000000  000b2240  2**2
                  CONTENTS, READONLY, DEBUGGING
  8 .stabstr      000a62e2  00000000  00000000  002a17bc  2**0
                  CONTENTS, READONLY, DEBUGGING
  9 .comment      00001cc0  00000000  00000000  00347a9e  2**0
                  CONTENTS, READONLY
 10 .text         00000000  c0038000  c0038000  0034975e  2**0
                  CONTENTS, READONLY"

What are "CONTENTS, ALLOC, LOAD, READONLY, CODE" ,etc ? Are they runtime
directives ?
Where can I find the description of how they are interpreted ?
TIA