What is a text designed for editing and authoring code is

A code editor

B

The text designed for editing and authoring code is source code editor.

A Source code editor is a text program designed specifically for editing source code of computer program by programmers. It may be a standalone application or it may be built into an (IDE) integrated development environment or web browser. source code editors are most fundamental programming tools as the fundamental job of programmers is to write and edit source code.