Consult 'Grass GIS' Documentation in the RStudio Viewer or your Browser

A tool for easy viewing of the documentation of 'GRASS GIS' (see < https://grass.osgeo.org/>). Pages of the 'GRASS GIS' manuals found at < https://grass.osgeo.org/grass78/manuals/full_index.html> and at < https://grass.osgeo.org/grass78/manuals/addons/> can be viewed within the Viewer pane of 'RStudio', or be opened in the user's default browser.