In the context of this application, a netlist is defined as a collection of wires and points which are logically equivalent during the course of a simulation. The modules which create and maintain the netlists in the workarea canvas are presented in Table 3.5.
| Module Name | Purpose |
| netcreate.tcl | Contains all the procedures necessary for the creation of wires and wire points on the workarea. Supports rubber banding as well as gridding of wires and wire points. |
| netdel.tcl | Procedures for deleting wire points and wires. |
| netlabel.tcl | Procedures responsible for displaying a dialog box for the purposes of letting the user label a point on a netlist. |
| netlist.tcl | This module contains several miscellaneous procedures which manipulate netlists as a whole. Operations such as identifying, splitting and uniting netlists are contained in this module. |
| netmove.tcl | Procedures for moving wires and wire points. |
| netsolder.tcl | Contains all the procedures necessary for soldering netlists together. Essentially, these procedures connect overlapping ports, points and wires together. |
| netutils.tcl | Several miscellaneous procedures which create and manipulate individual wires and wire points. |