E-mailing a presentation
OOo
provides several ways to quickly and easily send a Writer document
as an e-mail attachment in one of three formats: .ODP (OpenDocument
Presentation, OOo’s default format), .PPT (Microsoft PowerPoint
format), or PDF.
To send the current
document in .ODP format:
Choose
File > Send > Document
as E-mail. OpenOffice.org opens a new e-mail in your
default e-mail program. The document is attached.
In
your e-mail program, enter the recipient, subject and any text you
want to add, then send the e-mail.
File
> Send > E-mail as OpenDocument Presentation has
the same effect.
If
you choose E-mail as
Microsoft PowerPoint, OOo first creates a .PPT file and
then opens your e-mail program with the .PPT file attached. The .PPT
file is not saved on your computer.
Similarly,
if you choose E-mail as PDF,
OOo first creates a PDF using your default PDF settings (as when
using the Export Directly as
PDF toolbar button) and then opens your e-mail program
with the .PDF file attached. The PDF file is not saved on your
computer.
|
Tip
|
If
you want to keep a copy of the .PPT or .PDF file as well as
e-mailing it to someone, first save or export the presentation
into the required format, then attach it to an e-mail in the
usual way.
|
Digital
signing of documents
To
sign a document digitally, you need a personal key, the certificate.
A personal key is stored on your computer as a combination of a
private key, which must be kept secret, and a public key, which you
add to your documents when you sign them. You can get a certificate
from a certification authority, which may be a private company or a
governmental institution.
When
you apply a digital signature to a document, a kind of checksum is
computed from the document’s content plus your personal key. The
checksum and your public key are stored together with the document.
When
someone later opens the document on any computer with a recent
version of OpenOffice.org, the program will compute the checksum
again and compare it with the stored checksum. If both are the same,
the program will signal that you see the original, unchanged
document. In addition, the program can show you the public key
information from the certificate. You can compare the public key
with the public key that is published on the web site of the
certificate authority.
Whenever
someone changes something in the document, this change breaks the
digital signature.
On
Windows operating systems, the Windows features of validating a
signature are used. On Solaris and Linux systems, files that are
supplied by Thunderbird, Mozilla or Firefox are used. For a more
detailed description of how to get and manage a certificate, and
signature validation, see “Using Digital Signatures” in the OOo
Help.
To
sign a document:
Choose
File > Digital
Signatures.
If
you have not saved the document since the last change, a message
appears. Click Yes
to save the file.
After
saving, you see the Digital Signatures dialog. Click Add
to add a public key to the document.
In
the Select Certificate dialog, select your certificate and click
OK.
You
see again the Digital Signatures dialog, where you can add more
certificates if you want. Click OK
to add the public key to the saved file.
A
signed document shows an icon in the status bar. You can
double-click the icon to view the certificate.
