You may have to go into the folder and delete the leftover files from time to time. In the event of a program failure or a power failure, these files are not deleted. These temporary files are automatically deleted when a drawing closes normally. “b” is the number of open instances of the same drawing in different work sessions. “a” is the number of open instances of the same drawing file in the same work session. Here is how the file name is built by AutoCAD: They will be located in the folder you set in the Options Dialog box under the Files Tab. By default, files saved automatically are temporarily assigned the name filename_a_b_nnnn.sv$. If you turn the automatic save option on, your drawing is saved at specified time intervals. You can rename it – open it – verify that it is what you want and then overwrite the old file. You may want to copy it to a different folder to avoid overwriting your original file. You can revert to your backup version by renaming the. The backup file is located in the same folder as the drawing file. If you do, each time you save a drawing, the previous version of your drawing is saved to a file with the same name and a. In the Options dialog box, on the Open and Save tab, you can specify that backup files are created when you save drawings. If a problem occurs, you can restore a drawing backup file.
This area helps you avoid data loss and detect errors.ĪutoCAD automatically saves your files depending upon the setting in this box.īackup files help ensure the safety of your data. The next part of the Open and Save Tab is the File Safety Precautions.
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