Haha!
This is a visibility code that controls the visibility of polygons in a 3D model. If this code is pasted in the modeldef.xml and the model is compiled with this file, the visibility code will be attached to certain polygons (of modellers choice). When attaching the tracer effect to this polygon, this code controls the visiblity of tracer effects. See vistag.txt for the xml code
<visibility> </visibility>Here I got a bit of (2D xml) code that checks if TacPack is present or not. Based on that, it determines when the user is pressing the trigger, so: setting the GunsFire Lvar. See Tracers.txt.
So, within certain limits, it's certainly possible to display the tracers with or without TP. Cheers!