# Preview Check Only No file sync or cleanup is attempted, and the Workspace "have list" is not updated. This is effectively the same as using the `p4 sync -n` command. ![Preview Check Only](images/populatepreviewcheckonly.png) ## Option: You can select the following option: - **QUIET Perforce messages:** Enables the -q flag for all applicable Perforce Helix Core Serveroperations. Summary details will still be displayed. Click the browser **Back** button to go back to the previous page.