@@ -117,8 +117,8 @@
-A clearance is the gap between a line and the sorrunding polygon -in the same layer group. The gap is made only if the sorrunding polygon has +A clearance is the gap between a line and the sorrounding polygon +in the same layer group. The gap is made only if the sorrounding polygon has the "clearpoly" flag set and the line has the "clearline" flag set. If either of these flags is not set, no gap is made - or in pcb-rnd terminology, the line is joined to the polygon. @@ -150,9 +150,9 @@
Polygons are solid, filled copper areas with optional holes in them. Polygon -contour consits of lines - when they look curvy, it's really high resolution +contour consists of lines - when they look curvy, it's really high resolution line approximation. There are two type of holes in a polygon: explicit, -user drawn holes and clerance cutouts. User drawn holes are "negative" +user drawn holes and clearance cutouts. User drawn holes are "negative" polygons drawn manually. To keep polygons simple, if an user drawn hole touches the contour of a polygon, the hole is removed and the contour is modified; if two holes touch, they are merged into one hole. @@ -170,7 +170,7 @@ if there are multiple such polygons overlapping under the objects (on the same layer group), all such polygons get the clearance cutout.
-If a polgyon is cut into multiple islands, the behaviour depends on the +If a polygyn is cut into multiple islands, the behaviour depends on the "fullpoly" flag of the polygon. If it is not set (default), only the largest island is kept, else all islands are kept. In the "fullpoly" mode islands will have no galvanic connection (unless the user adds vias and connect them @@ -212,11 +212,11 @@ ring around the hole on each layer have the same sizes.
A copper ring also has a per layer property whether or how it connects to -the sorrunding polygon on the given layer; this is called the thermal style +the sorrounding polygon on the given layer; this is called the thermal style of the via. The following options are available:
| thermal style | appearance - | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| no connecton | | ||||||||||
| no connection | | ||||||||||
| solid | | ||||||||||
| round x 90 | | ||||||||||
| round x 45 | -In the footprint form the construct is small and flexible. Ot describes +In the footprint form the construct is small and flexible. It describes all the physical parts, like pins, pads, silk lines. In the same time a footprint leaves many details blank, e.g. it doesn't specify exact layers, it doesn't a have font and the refdes is random. @@ -383,7 +383,7 @@ The netlist assumes element refdes are unique. If an element has multiple instances of the same pin (or pad) number, the engine picks one randomly and -assumes there's an inivisible, internal connection within the element. +assumes there's an invisible, internal connection within the element. Rat lines can be regenerated from the current netlist for missing connections. Connections that are realized in copper but not present on the netlist, pcb-rnd @@ -408,7 +408,7 @@ 2.5. comparison of terms
|