# topic.topics[].label
Using PAC and BTI features in applications

# topic.topics[].topics[].label
Debug feature interactions with the PACBTI extensions

# topic.topics[].topics[].label
Impact of PAC and BTI on software libraries

# topic.topics[].label
Differences between PAC/BTI in Cortex-M and Cortex-A

# metadata.contentDescription
This guide introduces the Armv8.1-M PACBTI extensions.