g.manual display the manual pages of GRASS in HTML and MAN
format.
NOTES
The name of the HTML browser is defined in the environment variable
GRASS_HTML_BROWSER. For most platforms this should be an
executable in your PATH, or the full path to an executable. See
variables for details.
EXAMPLES
# how index
g.manual index
# show module manual page in HTML browser
g.manual d.vect
# show module manual page in terminal
g.manual -m d.vect