Sentence:  I'm using PC SAS and would like to get the symbol for infinity in the title of my output. ... When I [hold down the Alt key and enter 236] with SAS, it shows up correctly onscreen; but when it's printed out, I get an ‘s' with an <WSD>inverted hat</WSD> over it. 
Meaning of the word marked with <WSD> tags:  A (háček).