<model> <name>d_tristate</name> <type>Digital</type> <node_number>3</node_number> <title>Add Parameters for Tristate Buffer</title> <split>None</split> <param> <delay default ="1.0e-9">Enter Delay (default=1.0e-9)</delay> <input_load default ="1.0e-12">Enter Input Load (default=1.0e-12)</input_load> <enable_load default ="1.0e-12">Enter Enable Load (default=1.0e-12)</enable_load> </param> </model>