/usr/bin/mdassembler
/usr/bin/mdoc-assemble
/usr/bin/mdoc
/usr/bin/mdoc-export-html
/usr/bin/mdoc-export-msxdoc
/usr/bin/mdoc-update
/usr/bin/mdoc-validate
/usr/bin/mdvalidater
/usr/bin/mod
/usr/bin/monodocer
/usr/bin/monodocs2html
/usr/bin/monodocs2slashdoc
You may install this package on CentOS with
yum
install monodoc