"will make it easier to refer to the variables when printing them"
When who is printing them?
the browser?
and p 14
"To display the value of a variable, you can print the variable without quotation marks:"
Meaning, I can ask the browser to print the variable?
Or, I can type the variable (key) the variable w/o quotation marks?
and then
what do you mean by "you can print the variable without quotation marks"
I mean-