pcb-rnd - io_lihata versions
History of io_lihata, per format version.
lihata board
v1
Feature-compatible with the gEDA/PCB file format, plus allows multiple
fonts. Same assumptions on layers: last two must be the silk layers.
v2
Introduce the layer stack subtree and remove layer assumptions. Save
the combining field of layers.
v3
New global object subtree: subcircuit. Global object element has been removed.
Intconn is not a flag, but a pin/pad/terminal attribute.