Each can represent signals with frequencies no higher than half that rate, but the distinction between audio signals and sub-audio control signals is useful since it allows slower moving signals to require less compute time. In Csound orchestras and scores, spacing is arbitrary. It is important to be consistent in laying out your files, and you can use spaces to help this. In the Tutorial Instruments shown below you will see we have adopted one convention. The reader can choose his or her own.
Csound instruments are similar to patches on a hardware synthesizer.
This output symbol is significant in prescribing the rate at which the oscillator should generate output-here the audio rate. This allows you to fully comment your code. On each line, any text which follows a semicolon will be ignored by the orchestra and score translators.