If you are writing emails and specifications about Windows Installer all day, chances are your document or mail editor has plenty of squiggly red lines highlighting your presumed spelling errors like MsiPatchSequence. To not miss any actual spelling errors, I find myself double-checking and adding lots of Windows Installer terms to my custom dictionary so instead I created a separate dictionary containing Windows Installer tokens pulled from schema databases and headers.

You can download this zipped Unicode-encoded text file, unzip it, and configure it for use with Microsoft Office applications as described for 2007 and for older versions. This will probably work with other editors as well, but how to add the dictionary is an exercise left for the reader based on the editor.