@cindex function safety
@cindex safety of functions
-Some major modes such as SES call functions that are stored in user
+Some major modes, such as SES, call functions that are stored in user
files. (@inforef{Top, ,ses}, for more information on SES.) User
files sometimes have poor pedigrees---you can get a spreadsheet from
someone you've just met, or you can get one through email from someone