Send Special Arguments to the Access Method with -u
You can use the -u option to send special arguments
to the access method. The possible arguments depend on the access
method. For example, the R-tree access method supports the display option,
as the following example shows:
oncheck -pl -u "display"Use commas to separate multiple arguments in the argument string.
For information on valid arguments for your access method, refer to the user manual for your access method.