Chapter 4. The navigation
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# Chapter 4. The navigation

The navigation screenshot

With the navigation you have overall control of your song. Settings you perform here may influence the behaviour of AGS. There's a duration label doing a time approximation. It is really unreliable and may differ about 30 seconds after 3 minutes of playback. Note with higher frequency of the audio related threads it may differ less. An other factor is bpm what has an influence, as well.

## BPM

The beats per minute (BPM for short) indicates the velocity of a song being played. To adjust the BPM of the project in-/decrement the spinner labeled with bpm. To edit patterns or notes at a more granular rate select the wished tact within the appropriate engine or editor.

To calculate timings you divide 1 minute with the entered BPM and divide it with basic. For example you have a BPM rate of 120 and a 4/4 tact you would calculate the timing as follow:

Equation 4.1.

t = 1 / 120 * (1 / 4)

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