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<base href="http://publib.boulder.ibm.com:80/cgi-bin/bookmgr/BOOKS/EZ30OZ00/2.5.1">
<title>
2.5.1 "OS/2 WARP and OpenDoc"
via IBM BookManager BookServer
</title>
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<a name="HDR4610DDR"><H3> 2.5.1 Draft</H3></a>
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<pre width="80">
<p>
One of the OpenDoc advantages of the OpenDoc storage system is that
OpenDoc allows you to have a history of OpenDoc documents called <I>drafts</I>.
A draft is a specific version of an OpenDoc document. Multiple drafts can
be maintained within a single document as shown in the Draft History (see
<a href="#FIG4610D31">Figure 28</a>). The actual document is not included because it has not yet
been saved as an actual draft.
<p>
Under the edit menu there is an Open selection menu item which can be used
to open the selected draft. To revert to a previous draft, the user must
move or copy the draft somewhere else (to the desktop for example).
<p>
<a name="FIG4610D31"><hr>
</a>
<p>
<p>
<a href="picture-28?mode=zoom"><img src="/bookmgr/pictures/EZ30OZ00.P28.GIF" alt="PICTURE 28"></a>
<p>
<p>
<hr>
Figure 28. Draft History
<p>
Drafts apply to documents, not parts, and they store only those items of a
document that have changed in each draft. The newest version of a draft
is stored completely as a current draft (see <a href="#FIG4610D27">Figure 29</a>) in the file; the
elder versions can be reconstructed by the delta saved in the same Bento
file.
<p>
<a name="FIG4610D27"><hr>
</a>
<p>
<p>
<a href="picture-29?mode=zoom"><img src="/bookmgr/pictures/EZ30OZ00.P29.GIF" alt="PICTURE 29"></a>
<p>
<p>
<hr>
Figure 29. OpenDoc Storage System Hierarchical Structure
<p>
It is an incremental save done in a reverse order. By this incremental
save, several drafts of a document can be stored in one file edited by
different people, without fear of excessive disk space requirements.
</pre>
</pre>
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<cite> ⌐ Copyright IBM Corp. 1996</cite>
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