annular_width
board_edge
buried_via
clearance
condition
constraint
disallow
footprint
graphic
hole
inner
layer
length
max
micro_via
min
npth
opt
outer
pad
pth
rule
text
track
track_width
version
via
zone
edge_clearance
hole_clearance
courtyard_clearance
silk_clearance
skew
diff_pair_gap
diff_pair_uncoupled
via_count