What are the configurable options for an appender?
log4net uses public properties to configure components such as Appenders, Layouts, Loggers etc. Thus, any writable public property in on the appender corresponds to a configurable option. For example, in RollingFileAppender the public int MaxSizeRollBackups { set; } property corresponds to the MaxSizeRollBackups option. Layouts options are also defined by their writable properties. Same goes for most other log4net components.
