Merge pull request #64 from Adenilson/miscFixes03

Adding a description about what is a 'pole'.

Author: jihyerish

css-round-display/Overview.bs

@@ -273,7 +273,7 @@ The example below shows how the 'border-boundary' property works on drawing bord
 <p class="note">Note: If the value of 'border-boundary' is parent or display, border lines of the element are actually just a visual effect. It triggers a layout for rendering in a general way, but in the above cases (border-boundary: parent|display), the layout doesn't occur and it only draws the border lines inward from the containing block's borders. With this situation, the borders might hide contents around the display edge.
 </p>
 
-<h2 id="positioning-content">Positioning content by using the polar coordinate system</h2>
+<h2 id="positioning-content">Content positioning using polar coordinate system</h2>
 
 <p>
 Polar coordinate system is a two-dimensional coordinate system that describes the position of a point in a plane with a distance from a reference point and an angle from a reference direction. Elements could be placed along a circle or concentric circles, and the polar coordinate system is useful to handle such cases.
@@ -283,7 +283,7 @@ This section introduces polar positioning to support layout of elements in the p
 We add '<code>polar</code>' to the value of the 'position' property to support the polar coordinates of an element itself. The 'polar-angle' and 'polar-distance' properties specify the position of an element.
 </p>
 <p class="note">
-Note: In the polar coordinate system, a point is described as being a certain distance from the pole and a certain angle from the polar axis. In the mathematical theory, the polar axis is commonly defined as the positive direction of the x-axis, but we consider the polar axis as the positive direction of the y-axis position as other CSS specifications usually do. Therefore, when the 'polar-angle'  value  of an element is 0, the element is positioned on the y-axis. If the angle value of an element increases in the positive direction from 0, the element moves clockwise. The method to determine a direction using 'polar-angle' works the same way in [[CSS-VALUES]], <<angle>> value.
+Note: In polar coordinate system, a pole is the reference point and points are described as been a certain distance from it, as also a certain angle from the polar axis. In mathematical theory, the polar axis is commonly defined as the positive direction of the x-axis, but we consider the polar axis as the positive direction of the y-axis position as other CSS specifications usually do. Therefore, when the 'polar-angle'  value  of an element is 0, the element is positioned on the y-axis. If the angle value of an element increases in the positive direction from 0, the element moves clockwise. The method to determine a direction using 'polar-angle' works the same way in [[CSS-VALUES]], <<angle>> value.
 </p>
 <h3 id="position-property">The 'position' property</h3>
 When the 'position' property on an element is set to '<code>polar</code>', the element could be affected in polar coordinate system.