Gerber File Elements
Gerber file properties for PCB models generated by an unidentified ECAD system are extracted as described for models generated by PADS; see Gerber File Elements.
Drill File Elements
For all drill files generated by an unidentified ECAD system, both the properties Is External Contour Drill File and Is Probe Drill File are always set to false.
Information about start and end layers (the Start Layer and End Layer properties) is extracted as described for models generated by PADS; see Drill File Elements.
Information about tool properties is extracted as described for models generated by Eagle; see Drill File Elements.
Top-Level Element
No properties of the whole board are extracted for PCB models generated by an unidentified ECAD system.
Recommended File Format
aPriori recommends the use of a naming convention according to which names for copper layers have the form Lay<layer-number> or Layer< layer-number>.
aPriori also recommends that drill file names have the form <any-symbols>_<start-layer-number>-<end-layer-number>.
Finally, aPriori also recommends that drill file names include the string Plated or NonPlated. This allows to extraction of the Is Plated property.