Adobe Acrobat 8 3D - Manual (Page 54)

47 ADOBE ACROBAT 3D VERSION 8
User Guide
Save document changes
If you modify a PDF—such as by adding new pages from another file or deleting pages—you can save your changes
by saving the PDF or by saving a copy of the PDF. You can also save changes to your work incrementally and then
recover those changes if a problem occurs.
Note: Saving a digitally signed PDF invalidates the signature.
Save changes
• To save the changes to the current document, choose File > Save.
• To save the modified document to a new file, choose File > Save As. For Save As Type (Windows) or Format (Mac
OS), choose Adobe PDF Files (*.pdf). Type a name and location, and click Save.
Recover the last saved version
❖ Choose File > Revert, and then click Revert.
About the Autosave feature
The Autosave feature guards against losing your work in case of a power failure by incrementally, and at regular
intervals, saving file changes to a specified location. The original file is not modified. Instead, Acrobat creates an
autosave file of changes, which includes all the changes you made to the open file since the last automatic save. The
amount of new information that the autosave file contains depends on how frequently Acrobat saves the autosave
file. If you set the autosave interval to 15 minutes, you could lose the last 14 minutes of your work if a problem occurs.
Frequent automatic saving prevents loss of data, and is especially useful if you make extensive changes to a
document, such as by adding comments.
You can apply autosave changes to the original files when you restart Acrobat. When you close, save manually, or
revert to the last-saved version of a file, the autosave file is deleted.
Note: If you use assistive technology, such as a screen reader, you may want to disable the Autosave feature so that you
don’t lose your place when the file is reloaded.
The Autosave feature won’t work in the following cases:
• A document that has its security changed. You must save the document to re-enable automatic saving of document
changes.
• A document created using the WebCapture feature or extracted from a larger PDF (Document > Extract Pages).
You must save the document to enable automatic saving of changes.
• A document displayed in a web browser or incorporated into a container document that supports Object Linking
and Embedding (OLE). This document appears outside the default file system and cannot support automatic
saving.
Recover lost changes
To prevent lost changes after an unexpected interruption, the Autosave feature must be enabled, which is the default
setting.
Set up automatic saving
1 Choose Edit > Preferences (Windows) or Acrobat > Preferences (Mac OS).
2 Select Documents in the Categories list.