What signifies the end of a Karel function?

In Karel programming, the end of a function is typically indicated by a closing brace, which is represented by the character "}". This closing brace signals to the interpreter that the block of code defining the function has concluded. It helps in delineating the scope of the function and identifying where its set of instructions finish.

The use of braces is a common convention in many programming languages, where they are used to create blocks of code — such as functions, loops, and conditionals. The opening brace "{" denotes the beginning of the function, and the corresponding closing brace "}" marks the end, ensuring that the code within the braces is treated as a single unit.

The other symbols mentioned serve different purposes within programming syntax: a semicolon (;) serves to terminate statements or lines of code, parentheses (()) are often used for function arguments or in mathematical expressions, and "if" is a keyword used to denote conditional statements, but none of these signify the end of a function. This understanding is crucial for writing clear and properly structured code in Karel.