# PSYS_PART_BF_ONE

*LSL constant*

```lsl
integer PSYS_PART_BF_ONE = 0;
```

PSYS_PART_BF_ONE

Constant groups: [ParticleBlendFunc](/constants/groups/ParticleBlendFunc/)

:::note[Documentation]
This entry is documented in the LSL definitions. No matching wiki article is present in this local collection. Its inclusion here does not establish availability on every simulator.
:::

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From lsl.dev: https://lsl.dev/constants/PSYS_PART_BF_ONE/