Fixed a typo in DRC doc of 'corners'

src/doc/doc/about/drc_ref.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>

src/doc/doc/about/drc_ref_drc.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>
@@ -358,7 +358,7 @@ The plain function is equivalent to "primary.bbox_width".
 This method acts on edge expressions and delivers a specific part of each edge.
 See <a href="/about/drc_ref_layer.xml#centers">layer#centers</a> for details about this functionality.
 </p>
-<a name="corners"/><h2>"corners" - Applies smoothing</h2>
+<a name="corners"/><h2>"corners" - Selects corners of polygons</h2>
 <keyword name="corners"/>
 <p>Usage:</p>
 <ul>
@@ -369,8 +369,10 @@ See <a href="/about/drc_ref_layer.xml#centers">layer#centers</a> for details abo
 <p>
 This operation acts on polygons and selects the corners of the polygons.
 It can be put into a condition to select corners by their angles. The angle of
-a corner is positive for a turn to the left if walking a polygon counterclockwise
+a corner is positive for a turn to the left if walking a polygon clockwise
-and negative for the turn to the right. Angles take values between -180 and 180 degree.
+and negative for the turn to the right. Hence positive angles indicate concave
+(inner) corners, negative ones indicate convex (outer) corners.
+Angles take values between -180 and 180 degree.
 </p><p>
 When using "as_dots" for the argument, the operation will return single-point edges at
 the selected corners. With "as_boxes" (the default), small (2x2 DBU) rectangles will be
@@ -386,8 +388,8 @@ out = in.drc(primary.corners)    # equivalent
 The following example selects all inner corners:
 </p><p>
 <pre>
-out = in.drc(corners &lt; 0)
+out = in.drc(corners &gt; 0)
-out = in.drc(primary.corners &lt; 0)    # equivalent
+out = in.drc(primary.corners &gt; 0)    # equivalent
 </pre>
 </p><p>
 The "corners" method is available as a plain function or as a method on <a href="/about/drc_ref_drc.xml">DRC</a> expressions.

src/doc/doc/about/drc_ref_global.xml

@@ -1,17 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>
 <title>DRC Reference: Global Functions</title>
 <keyword name="global"/>
-<p>
-Some functions are available on global level and can be used without any object.
-Most of them are convenience functions that basically act on some default object
-or provide function-like alternatives for the methods.
-</p>
 <h2-index/>
 <a name="angle"/><h2>"angle" - In universal DRC context: selects edges based on their orientation</h2>
 <keyword name="angle"/>

src/doc/doc/about/drc_ref_layer.xml

@@ -1,15 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>
 <title>DRC Reference: Layer Object</title>
 <keyword name="Layer"/>
-<p>
-The layer object represents a collection of polygons, edges or edge pairs.
-</p>
 <h2-index/>
 <a name="&amp;"/><h2>"&amp;" - Boolean AND operation</h2>
 <keyword name="&amp;"/>
@@ -268,7 +265,7 @@ deliver objects that can be converted into polygons. Such objects are of class <
 This method produces markers on the corners of the polygons. An angle criterion can be given which
 selects corners based on the angle of the connecting edges. Positive angles indicate a left turn
 while negative angles indicate a right turn. Since polygons are oriented clockwise, positive angles
-indicate concave corners while negative ones indicate convex corners.
+indicate concave (inner) corners while negative ones indicate convex (outer) corners
 </p><p>
 The markers generated can be point-like edges or small 2x2 DBU boxes. The latter is the default.
 </p><p>

src/doc/doc/about/drc_ref_netter.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>

src/doc/doc/about/drc_ref_source.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>

src/doc/doc/about/lvs_ref.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>

src/doc/doc/about/lvs_ref_global.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>

src/doc/doc/about/lvs_ref_netter.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "klayout_doc.dtd">
 
-<!-- generated by /home/matthias/klayout/0.28/scripts/drc_lvs_doc/extract_doc.rb  -->
+<!-- generated by /home/matthias/klayout/master/scripts/drc_lvs_doc/extract_doc.rb  -->
 <!-- DO NOT EDIT! -->
 
 <doc>

src/drc/drc/built-in-macros/_drc_complex_ops.rb

@@ -756,15 +756,17 @@ CODE
   
   # %DRC%
   # @name corners
-  # @brief Applies smoothing
+  # @brief Selects corners of polygons
   # @synopsis expression.corners
   # @synopsis expression.corners(as_dots)
   # @synopsis expression.corners(as_boxes)
   #
   # This operation acts on polygons and selects the corners of the polygons.
   # It can be put into a condition to select corners by their angles. The angle of
-  # a corner is positive for a turn to the left if walking a polygon counterclockwise
+  # a corner is positive for a turn to the left if walking a polygon clockwise
-  # and negative for the turn to the right. Angles take values between -180 and 180 degree.
+  # and negative for the turn to the right. Hence positive angles indicate concave
+  # (inner) corners, negative ones indicate convex (outer) corners.
+  # Angles take values between -180 and 180 degree.
   #
   # When using "as_dots" for the argument, the operation will return single-point edges at
   # the selected corners. With "as_boxes" (the default), small (2x2 DBU) rectangles will be
@@ -780,8 +782,8 @@ CODE
   # The following example selects all inner corners:
   #
   # @code
-  # out = in.drc(corners < 0)
+  # out = in.drc(corners > 0)
-  # out = in.drc(primary.corners < 0)    # equivalent
+  # out = in.drc(primary.corners > 0)    # equivalent
   # @/code
   #
   # The "corners" method is available as a plain function or as a method on \DRC# expressions.

src/drc/drc/built-in-macros/_drc_layer.rb

@@ -1232,7 +1232,7 @@ CODE
     # This method produces markers on the corners of the polygons. An angle criterion can be given which
     # selects corners based on the angle of the connecting edges. Positive angles indicate a left turn
     # while negative angles indicate a right turn. Since polygons are oriented clockwise, positive angles
-    # indicate concave corners while negative ones indicate convex corners.
+    # indicate concave (inner) corners while negative ones indicate convex (outer) corners
     # 
     # The markers generated can be point-like edges or small 2x2 DBU boxes. The latter is the default.
     #