l_userOptions.Rd
All of loon's displays access a set of common options. This function accesses and returns the names of the subset of loon options which can be changed by the user.
l_userOptions()
a vector of all user settable option names.
l_userOptions()#> [1] "select-color" "background" "foreground" #> [4] "guidesBackground" "guidelines" "brush_color" #> [7] "brush_color_handle"