IBM System/360 and /370 mainframe computer console pushbutton insert

Here is my attempt at replicating the pushbutton insert for the IBM SYSTEM/360 and System/370 mainframe computers that were popular during the mid-1960s to late 1970s. These machines had operator consoles with numerous switches, lights and buttons ('blinkenlights') that all good computers had back then.

Instructions
A number of pre-generated insert STL files are provided that are from SYSTEM/360 however if you want to do your own custom lable then proceed as follows..
In the OpenSCAD parametric script you can choose which pushbutton insert to produce, by uncommenting one (and one only at a time) button module between the START HERE and END HERE section. Comment out the Demo line first.

Hit F5 to colour render, and then F6 to finish render before hitting the Generate STL button.

Printing
PLA tests came out very well. ABS was very good too, but if using ABS check for dimensional accuracy (to width and height, given in the script) so they don't jam in the console panel, you ma