Pacman packages

[NeetuP14]

Appreciate feedback and information on why did pacman package installed the following several sub packages when all I prompted was for "rgl"
pacman::p_load(rgl)
Instead of just installing 'rgl', it installed following and if can you share the documentation for description for each of the following packages :

[lwjohnst86]

That's because rgl depends on all those packages, which also needed to be installed: https://cran.r-project.org/web/packages/rgl/index.html