Adobe Photoshop CS3 - Manual (Page 61)

PHOTOSHOP CS3
User Guide
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Automatically Create New Snapshot When Saving Generates a snapshot every time you save.
Allow Non-Linear History Makes changes to a selected state without deleting the states that come after. Normally,
when you select a state and change the image, all states that come after the selected one are deleted. In this way, the
History palette can display a list of the editing steps in the order that they were made. By recording states in a
nonlinear way, you can select a state, make a change to the image, and delete just that state. The change is appended
at the end of the list.
Show New Snapshot Dialog By Default Forces Photoshop to prompt you for snapshot names even when you use the
buttons on the palette.
Make Layer Visibility Changes Undoable By default, turning layer visibility on or off is not recorded as a history step
and therefore can’t be undone. Select this option to include layer visibility changes in history steps.
Set Edit History Log options
You may need to keep careful track of what’s been done to a file in Photoshop, either for your own records, client
records, or legal purposes. The Edit History Log helps you keep a textual history of changes made to an image. You
can view the Edit History Log metadata using Adobe Bridge or the File Info dialog box.
You can choose to export the text to an external log file, or you can store the information in the metadata of edited
files. Storing many editing operations as file metadata increases file size; such files may take longer than usual to open
and save.
If you need to prove that the log file hasn’t been tampered with, keep the edit log in the file’s metadata, and then use
Adobe Acrobat to digitally sign the log file.
By default, history log data about each session is saved as metadata embedded in the image file. You can specify
where the history log data is saved and the level of detail contained in the history log.
1 Choose Edit > Preferences > General (Windows) or Photoshop > Preferences > General (Mac OS).
2 Click the History Log preference to toggle from on to off or vice versa.
3 In the History Log Options panel, choose one of the following options:
Metadata Saves the history log as metadata embedded in each file.
Text File Exports the history log to a text file. You are prompted to name the text file and choose a location in which
to store it.
Both Stores metadata in the file and creates a text file.
Note: If you want to save the text file in a different location or save another text file, click the Choose button, specify
where to save the text file, name the file if necessary, and click Save.
4 From the Edit Log Items menu, choose one of the following options:
Sessions Only Keeps a record of each time your start or quit Photoshop and each time you open and close files (each
image’s filename is included). Does not include any information about edits made to the file.
Concise Includes the text that appears in the History palette in addition to the Sessions information.
Detailed Includes the text that appears in the Actions palette in addition to the Concise information. If you need a
complete history of all changes made to files, choose Detailed.