.jazzignore patterns without braces

### Jazz Ignore 0
# The property core.ignore specifies a list of file patterns that will be
# ignored in this directory. 
#
# The value of core.ignore.recursive will be ignored.
#
# Ignored files and folders will not be committed, but may be modified during
# accept or update.
# Ignore properties should contain a space separated list of filename patterns.
# Each pattern is case sensitive and surrounded by braces ('{' and '}'). 
# "*" matches zero or more characters, and "?" matches single characters. 
#
#   e.g: {*.sh} {\.*}    ignores shell scripts and hidden files

# NOTE: modifying ignore files will not change the ignore status of derived 
# resources.

core.ignore.recursive= {*.png}

core.ignore= failures infos warnings
        

Can someone tell me what the core.ignore line in this .jazzignore does?  Do the failures, infos, and warnings patterns simply do nothing? Or do they actually cause files to be ignored?  If the latter, what files are ignored?