Package: yelp

"yelp" package binaries on CentOS:

/usr/bin/gnome-help /usr/bin/yelp

You may install this package on CentOS with yum install yelp

"yelp" package binaries on Debian:

/usr/bin/gnome-help /usr/bin/yelp

You may install this package on Debian with apt-get install yelp