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G R A P H I C S - P R O. C O M F E B R U A R Y 2 0 2 3 • G R A P H I C S P R O 8 9 dialog box presents: • Automatically Create First Snapshot produces a snapshot of the original image upon opening it and places its thumbnail at the top of the History panel. • Automatically Create New Snapshot When Saving generates a snapshot of the current state when saving and adds its thumbnail to the top of the History panel. • Allow Non-Linear History enables you to discard or edit a previous History state without deleting more recent states. • Show New Snapshot Dialog By Default automatically displays the Snapshot dia- log box when a new snapshot is created, prompting you to name the snapshots as they are made. History brush The History Brush will edit specific regions of the current image back to a former state for maximum f lexibility. With this tool it's easy to combine ele- ments from various stages of the docu- ment. Simply choose the tool, click the box to the left of the history state, choose brush options, and paint. e brush copies the content from the former history state to the current one. (Fig. 7). Additionally, Areas can be filled with History from the Fill dialog box. e pro- cess is similar to using the History brush, Select an area, click the box to the left of the history state, Choose Edit > Fill > History (Fig. 8) I should point out that these techniques don't work if the targeted content is on a separate layer. Tonal and color adjust- ments on Adjustment layers are also unaffected by the History brush and fill command. Good news bad news e good news is that History features create an extremely dynamic workflow. e bad news is that History states are recorded only for the current work session and are not saved along with the file. Each time a file is saved and closed and then opened again, a new history begins. You can, however, save any snapshot or history state as a document and thereby generate as many versions as you like. Fig. 8. The History Brush copies the content from a for- mer history state to the current one. Fig. 9. Setting up a History Log in the History and Content Credentials preferences is a convenient way to have a written record of a work session. History log Setting up a History Log in the History and Content Credentials preferences is a convenient way to have a written record of a work session. (Fig. 9) A history log is a written record of the workflow. A History Log can be generated as a Text document, Metadata, or both. Once gen- erated, the metadata is accessed from the File > File Info > Photoshop dialog box (Fig. 10) and the text document is located where you saved it. From the Edit Log Items menu, choose Sessions Only to gen- erate the session date, Concise for a list of tools and commands that were used and Detailed for a complete accounting of each history state including settings and specifications. Instead of adding excessive history states, it's advisable to make a snapshot of the image at key intervals in the editing process.