Final answer:
Curly braces ({}) and single quotes ('') were not discussed in the coding guidelines of the lesson.
Step-by-step explanation:
The coding characters that are not discussed in the lesson are curly braces ({}) and single quotes (''). The provided materials covered the use of commas, semicolons, colons, hyphens, apostrophes, and parentheses, but did not mention curly braces or single quotes. Curly braces are often used in programming to define a block of code, while single quotes are used for character literals or string delimiters in many programming languages.
In this lesson on coding guidelines, the characters that are not discussed are:
Single quotes ('') - Single quotes are used to represent character literals in some programming languages, but they are not specifically discussed in this lesson.
Curly braces ({}) - Curly braces are often used to define blocks of code in many programming languages, but they are not discussed in this lesson.
The characters that are discussed in this lesson are the semicolon (;) and parentheses ().