The term 'CODE LEAD-IN' can be broken down into two parts: 'CODE' and 'LEAD-IN'. The first part, 'CODE', is an AREA of study that involves the use of algorithms and programming languages to create software. The second part, 'LEAD-IN', refers to the introduction or preface of a piece of work. When combined, the term 'CODE LEAD-IN' can refer to the introduction of a software program, which is typically written IN a programming language. The crossword solutions for this term are 'AREA' (4 letters) and 'UNI' (3 letters). 'AREA' could refer to the field of computer science, which is the AREA of study related to coding and programming. 'UNI' could refer to a university, which is a place where students can learn about coding and programming.