In Photoshop, continuous undoing of multiple steps can be achieved through three methods. First, use the "History" panel and click any step to fall back to this state; second, press the Alt Ctrl Z (Windows) or Option Command Z (Mac) shortcut keys to gradually undo; third, create a "snapshot" to save the key state so that it can be restored at any time. Among them, mastering the "History" panel and undo shortcut keys can meet daily photo editing needs.

Retaining layer information when exporting PDFs can cause compatibility issues, and flattening can resolve this issue. Use the "Pre-press Check" tool of Adobe AcrobatProDC to flatten the PDF with one click, which is suitable for most cases; 1. Open the PDF, click "Tools" > "Pre-press Check" on the right; 2. Click the gear icon, select "Flat Page Content", and confirm and save the file. Advanced users can manually adjust settings: 1. Create a new configuration file and check "Flat Transparency" in "Repair"; 2. Set the resolution and apply the configuration. After flattening, you should pay attention to problems such as larger file size, reduced editing, and text conversion to pictures. It is recommended to keep the original copy for modification.

The steps to send documents for others to sign with Adobe AcrobatSign are as follows: 1. Prepare the final version of the PDF file. If there is no PDF, you can upload it to other formats to automatically convert it, and ensure that the content is correct; 2. Create a new signing process after logging in, add recipient information and set the signature location, assign permissions to each signer, and adjust the signing order; 3. Optionally set email reminders, deadlines and signature methods to improve signing efficiency; 4. Send the document after confirming that it is correct, track the signing status through the system in real time, and download a copy or resend a reminder to complete the signing process.

To solve the problem that Chrome browser cannot preview PDFs online, 1. Install the official Adobe Acrobat extension; 2. Enter the extension page to make sure it is enabled and set to allow incognito mode to run; 3. Turn off the built-in PDF reader option in Chrome settings to set it to be opened by default with Acrobat; 4. If you encounter a prompt "Managed by Organization", you need to contact the administrator to handle it. After completing the above steps, you can directly view PDF files in your browser.

Problems are usually caused by layer settings, viewport display, line-type scale, or graphic refresh. 1. Check whether the layer is closed or frozen, and confirm that the color is different from the background; 2. Use ZOOMEXTENTS in the viewport to ensure that the geometry is within the visual range; 3. Adjust the LTSCALE value to fix the linear scale abnormality; 4. Check whether there are color output restrictions in the printing style sheet; 5. Try the REGEN command or switch the visual style to solve the graphics rendering problem. Check the reasons in order to quickly locate the reasons.

The key to making neon light effects in Photoshop lies in the matching of layer style and overlay method. The specific steps are as follows: 1. Use "Inner Glow" and "Gradial Overlay" to create basic luminescence, select neon tones and adjust parameters to simulate the brightness of the lamp; 2. Add "Outer Glow" and combine "Gaussian Blur" to enhance the three-dimensional sense of the halo; 3. Improve the texture by adding noise to make the effect closer to the real neon; 4. Use dark backgrounds, projections and atmosphere materials to enhance the overall visual impact.

To make pictures look age-like in Photoshop, you need to imitate the characteristics of old photos and master the key steps. First, add warm tones to increase yellow and red to reduce blue by Color Balance, or use Gradient Map to select brown and yellow gradients and adjust blending mode and opacity. Secondly, adding texture and noise can be used to control the values ??using the Add Noise filter, or overlay old photo textures and set blending mode. Again, make scratches and edge wear to download scratch maps as layers and adjust positions and modes, or use built-in filters to simulate effects. Finally, pay attention to moderate processing, use adjustment layers and masks to facilitate modification, and appropriately reduce contrast to make the picture softer and more natural.

When using neural network filters to color photos in Photoshop, you need to pay attention to key steps and details. First, make sure that the software version supports this function, log in to the Adobe account and download and install the filter plug-in; then open the "Smart Coloring" option, and let the AI ??automatically finish the coloring after downloading the model; then check the results, use the brush tool, local application filters or combined with desaturation to manually color the error area; finally, after confirming that the effect is correct, export and save, it is recommended to keep the two versions of the AI ??layer and the final product. Although the entire process is simple, you need to pay attention to network connection, model loading and post-adjustment techniques.