SLR 21 – Thinking logically (AS & A’Level) OCR A’LEVEL SLR21 Decision points in a solution OCR A’LEVEL SLR21 Determine logical conditions OCR A’LEVEL SLR21 Decisions and program flow Also in this topic... SLR04 – Operating systems – Systems software (AS & A’Level) SLR07 – Types of programming language (A’Level Only) SLR13 – Data types (AS & A’Level) SLR20 – Thinking procedurally (AS & A’Level) SLR 24 – Computational methods (A’Level Only)