If you use Microsoft Office 2007 or later, you can successfully add words you type in a Word document into Word's custom default dictionary.
Previous versions of Office (ie. 97 and 2003) do not support the glottal and macron Unicode characters within the user custom dictionary.
- Microsoft Windows Character map. Run, "%windir%\system32\charmap.exe"
This program can be used to check font for presence of the special glottal character within a specific font.