So you worked tirelessly and updated your custom dictionary on MS-Windows with all your specific technical terms of your area of work and then you get a new computer or a new hard drive and all is gone. How to avoid this? Simply copy the file “Custom.dic” from your old installation to the new one. Where is it? Here: “UsersUSERNAMEAppDataRoamingMicrosoftUProof”; simply replace “USERNAME” with your login ID.