In theory, solicitations follow the Uniform Contract Format (UCF) and people use the Section Letters as shorthand for the content in them. So for your reference we are including the UCF in the associated documents.
Part I – The Schedule
-A – Solicitation/contract form
-B – Supplies or services and prices
-C – Descriptions/specifications/performance work statement (PWS)
-D – Packaging and marking
-E – Inspection and acceptance
-F – Deliveries or performance
-G – Contract administrative data
-H – Special contract requirements
Part II – Contract Clauses
-I – Contract clauses
Part III – List of Documents, Exhibits, and Other Attachments
-J – Attachments – a flexible section designation
Part IV – Representation and Instructions
-K – Representations, certifications, and other statements of offerors
-L – Instructions, conditions, and notices to offerors
-M – Evaluation criteria for award