At a high level, Spectre parameters use the following syntax.
Declare parameters with the take-parameter tag. For more details and examples, see Declaring Parameters.
take-parameter <parameter_name> selection=<boolean> {
default-all-values
default <value_string> <value_string> <value_string>
null=<boolean value>
default-from-user-property <name_string>
}
Provision parameters with the pass-paramenter tag. For more details and examples, see Passing Parameters.
pass-parameter <parameter_name> <value_string> {
all-values
values <strings of values>
values-extended <values list> type=<type string> null=<boolean value>
}