Final answer:
A structure editor must support syntax highlighting, code completion, and code refactoring.
Step-by-step explanation:
Structure Editor and its Support
A structure editor is a type of text editor that provides support for creating and manipulating structures in code.
To support the functionality required for a structure editor, several features are necessary:
Syntax highlighting: This feature highlights different elements of a code artifact, such as keywords, variables, and comments, making it easier for the editor to understand the structure of the code.
Code completion: Code completion assists the editor by suggesting possible completions as a developer types, reducing the amount of manual input required.
Code refactoring: Code refactoring allows the editor to make changes to the structure and organization of the code, ensuring its clarity, readability, and maintainability.
While version control could be helpful in managing changes to code artifacts, it is not a specific requirement for a structure editor to function.