SLR 23 – Programming techniques 133. OCR A Level (H046-H446) SLR23 – 2.2 Programming constructs 135. OCR A Level (H046-H446) SLR23 – 2.2 Global & local variables 136. OCR A Level (H046-H446) SLR23 – 2.2 Functions & procedures 137. OCR A Level (H046-H446) SLR23 – 2.2 Integrated development environments 134. OCR A Level (H446) SLR23 – 2.2 Recursion 138. OCR A Level (H446) SLR23 – 2.2 Object orientated techniques