Consider the following sentence:
This allows convenient writing of queries in JavaScript template strings
(that is itself delimited with backticks).
"is" refers to "template strings", but "strings" is plural and it should therefore be "are" instead of "is".
"that are" feels awkward to me however and I would change it to "which are" - I guess both are acceptable in this context?
I wonder what to do with the "itself". Can it be used for multiple "it"s?
Should it be "... which are themselve ..." ? Or is "themselve" only used for people (he/she)?