@p.konetskiy
Thanks so much for your help. I have updated the file and ran a repair and rebuild but the changes are not showing yet… Please let me know if there is anything else that I need to do? I have included a snippet of my code below (sorry, I am not a developer 
) Thanks. -Michael
$.fn.EmailsComposeView.defaults = {
"tinyMceOptions": {
skin_url: "themes/default/css",
skin: "",
plugins: "fullscreen",
menubar: false,
toolbar: ['fontselect | fontsizeselect | bold italic underline | styleselect | bullist | numlist'],
formats: {
bold: {inline: 'b'},
italic: {inline: 'i'},
underline: {inline: 'u'}
},
convert_urls:true,
relative_urls:false,
remove_script_host:false,
}
};
/
I have commented the old toolbar line using two slashes - “//”