- S+: Comments in this category provided positive feedback about a specific element of the code.
- S−: Comments in this category provided specific negative feedback about the functionality, style or correctness of the program.
- S0: Comments in this category were specific, but were not obviously positive or negative in tone.
- SA: Comments in this category provided specific advice to a student about how to improve their code.
- G+: Comments in this category are general comments that are positive. The comments do not relate to a specific element of style or requirement specified in the assignment.
- G−: Comments in this category are general negative comments. They do not refer to any specific elements of code, but are instead comments directed at the overall quality (summary comments).
- G0: Comments in this category are general comments that do not have either positive or negative connotations.
- GA: Comments in this category provided general advice to peers, but did not refer to specifics within the code.
- OT: Comments in this category were off-topic.