Here is a list of all related documentation pages:

Unit test framework
Features
Quick start
Logging events in your code
Verbosity levels of logging
Filters and their uses
Organizing and filtering log messages by types
Logging to permutations of multiple targets
Deferring logging output
Custom formatting of log messages
Adding new logging output targets
Implementing a custom memory manager
Memory leak detection
Unicode support
Publisher-subscriber functionality
Internal architecture
Performance topics
Multithread locking and mutexes
Porting logog
Requirements
Supported platforms
License agreement
Community and support
Other logging frameworks and systems
Todo List