# PSYS_PART_TARGET_POS_MASK

*LSL constant*

```lsl
integer PSYS_PART_TARGET_POS_MASK = 0x40;
```

Particle flag causing emitted particles to change course and travel toward the target specified by PSYS_SRC_TARGET_KEY during their lifetime. If no valid or reachable target is set, particles target the emitting prim itself.

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

:::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_TARGET_POS_MASK/