This function allows the user to examine and reset the values
of global parameters which control actions in the
spatstat package.
It is analogous to the system function options
. The global parameters are:
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
If no arguments are given,
the current values of all parameters are returned,
in a list.
If one parameter name is given, the current value of this
parameter is returned (not in a list, just the value).
If several parameter names are given,
the current values of these parameters are returned, in a list.
If name=value
pairs are given, the named parameters
are reset to the given values, and the previous values of
these parameters are returned, in a list.