-We asked before how you specify an imp. We've seen one notation, using an initial single-quote. That works if you're ready to construct the imp without the help of any variables. But if you want to use variables, what should you do? (There is in fact a variation on quotation, called *quasi-quotation* and using the initial prefix <code>`</code> rather than `'` that you could use; but I'm not going to explain that.) If you want to build a *proper* imp, that is, a Scheme list, you can instead use the function/constructor `list`:
+We asked before how you specify an imp. We've seen one notation, using an initial single-quote. That works if you're ready to construct the imp without the help of any variables. But if you want to use variables, what should you do? (There is in fact a variation on quotation, called *quasi-quotation* and using the initial prefix <code>\`</code> rather than `'` that you could use; but I'm not going to explain that.) If you want to build a *proper* imp, that is, a Scheme list, you can instead use the function/constructor `list`: