# Altium project temp and backup files
*.PrjPCBStructure
*.PcbDocPreview
*.PrjPcbState
*.DBLibPreview
*.SchDocPreview
*.VersionControlCache
*.DRC
*.LOG
*.Mch
*.outjobcache
*.tmp
~$*

# History folders and generated outputs
History/
__Previews/
Generated/
Project Logs/

# Backup files
*.bkp
*.Backup*
*.old
*.bak
*.swp
*.swo

# System
Thumbs.db
.DS_Store