You will generally not need to use this function unless you are handling custom plot output.
Packages needing custom parameters should ask users to place them within
the other.parameters entry under the package name, e.g.
figures:
other.parameters:
rgl:
fig.asp: 1
fig_settings()A list containing the entries from the figures field in _pkgdown.yml
(see build_reference()), with default values added. Computed width and
height values (in pixels) are also included.