---
title: tag
framework: kernel
role: pseudoSymbol
path: kernel/iodevicememory/initelement/tag
---

# tag

32-bit value not interpreted by IODeviceMemory or IOMemoryDescriptor, for use by the bus family.

## See Also

### Fields

- [start](kernel/iodevicememory/initelement/start.md)
- [length](kernel/iodevicememory/initelement/length.md)