<model> <name>d_buffer</name> <type>Digital</type> <node_number>2</node_number> <title>Add Parameters for Buffer</title> <split>None</split> <param> <rise_delay default ="1.0e-9">Enter Rise Delay (default=1.0e-9)</rise_delay> <fall_delay default ="1.0e-9">Enter Fall Delay (default=1.0e-9)</fall_delay> <input_load default ="1.0e-12">Enter Input Load (default=1.0e-12)</input_load> </param> </model>