To identify the blocks of data you want to view, use
offset and
span.
The values you assign to
offset and
span, together,
define a contiguous string of blocks that you want to view:
- The value assigned to offset specifies the relative block
at which to start the view. An offset of 0 means the first block;
an offset of 1 means the second block; an offset of 2 means the third
block, and so forth.
- The value assigned to span specifies the number of blocks
to view. A span of 1 means one block; a span of 2 means two blocks,
and so forth. A span of 0 has special meaning: it means the
view is to start at the specified offset and extend until the currently
defined end of the object.
The following table shows examples of several offset and span combinations
and the resulting view in the window.
| Offset |
Span |
Resulting view in the window |
|---|
| 0 |
0 |
view the entire object |
| 0 |
1 |
view the first block only |
| 1 |
0 |
view the second block through the last block |
| 1 |
1 |
view the second block only |
| 2 |
2 |
view the third and fourth blocks only |