File "rules" has instructional text as comments near top.
2) Convert all text files in repo to LF line ending form.
Any checkout done with "rules" in play will convert the working
tree to native line ending, while keeping repo as LF line ending.
* Eeschema can generate this netlist format.
* Pcbnew can use (automatic identification) the current format or the new format.
* Cvpcb does not use yet the new format.