@Ryan R If lines above are in a

code.sym

element just escape the quotes:

plot \"VOUT0[0]\"

This is needed since the lines are part of a

value

attribute:

value="

<spice command lines>

<spice command lines>

"

Quotes inside the value attribute must be escaped, to avoid confusing with a closing quote. Alternatively, select 'value' in the list box on the right, you will be editing only the value attribute. You won't need to add escapes, xschem will add them for you.