question: public boolean displayTopicFromNames ( String [ ] names ) { if ( names . length == 0 ) return displayTopic ( DEFAULT ) ; else { StringBuffer helpName = new StringBuffer ( ) ; for ( String name : names ) { if ( helpName . length ( ) > 0 ) helpName . append ( "_" ) ; helpName . append ( name ) ; } return displayTopic ( helpName . toString ( ) ) ; } }
target:  Display help for a topic. The topic consists of one or more strings. To locate the corresponding file, we lower case the strings, connect them by "_" characters, and add the help file suffix.