SETUP
ROFF is a format used in UNIX MAN pages. For reading SYNRC N2O.DEV pages in
$ curl https://n2o.dev/deps/n2o/groff/man/ua/bert.js.1 \
| groff -i -man -K utf8 -Tutf8
This could be achieved with (e.g. in Mac):
$ brew install groff
Also please ensure that you have the following /etc/man.conf:
FHS
MANPATH /usr/share/man
MANPATH /usr/local/share/man
MANPATH_MAP /bin /usr/share/man
MANPATH_MAP /sbin /usr/share/man
MANPATH_MAP /usr/bin /usr/share/man
MANPATH_MAP /usr/sbin /usr/share/man
MANPATH_MAP /usr/local/bin /usr/local/share/man
MANPATH_MAP /usr/local/sbin /usr/local/share/man
MANPATH_MAP /usr/bin/mh /usr/share/man
TROFF /usr/bin/groff -Tps -mandoc -c
NROFF /usr/bin/groff -Wall -mtty-char -Tascii -mandoc -c
JNROFF /usr/bin/groff -Tnippon -mandocj -c
EQN /usr/bin/eqn -Tps
NEQN /usr/bin/eqn -Tascii
JNEQN /usr/bin/eqn -Tnippon
TBL /usr/bin/tbl
COL /usr/bin/col
REFER /usr/bin/refer
PIC /usr/bin/pic
VGRIND
GRAP
PAGER /usr/bin/less -is
BROWSER /usr/bin/less -is
HTMLPAGER /bin/cat
CAT /bin/cat
CMP /usr/bin/cmp -s
COMPRESS /usr/bin/bzip2
COMPRESS_EXT .bz2
.gz /usr/bin/gunzip -c
.bz2 /usr/bin/bzip2 -c -d
.z
.Z /usr/bin/zcat
.F
.Y