Removing ancient comments and pointless comments.

Translating <code></code> into backticks.

Removed the "@param tree ..." blocks which have been
taunting me for half a decade now.

Removed commented-out blocks of code which had been
sitting there for two years or more.

Author: paulp

src/library/scala/xml/Elem.scala

@@ -17,7 +17,7 @@ package scala.xml
  *  @author Burak Emir <[email protected]>
  */
 object Elem {
-  /** Build an Elem, setting its minimizeEmpty property to <code>true</code> if it has no children.  Note that this
+  /** Build an Elem, setting its minimizeEmpty property to `true` if it has no children.  Note that this
    *  default may not be exactly what you want, as some XML dialects don't permit some elements to be minimized.
    *
    * @deprecated This factory method is retained for backward compatibility; please use the other one, with which you

src/library/scala/xml/Node.scala

@@ -55,7 +55,7 @@ abstract class Node extends NodeSeq {
   def scope: NamespaceBinding = TopScope
 
   /**
-   *  convenience, same as <code>getNamespace(this.prefix)</code>
+   *  convenience, same as `getNamespace(this.prefix)`
    */
   def namespace = getNamespace(this.prefix)
 
@@ -64,8 +64,8 @@ abstract class Node extends NodeSeq {
    * checks if scope is `'''null'''`.
    *
    * @param pre the prefix whose namespace name we would like to obtain
-   * @return    the namespace if <code>scope != null</code> and prefix was
-   *            found, else <code>null</code>
+   * @return    the namespace if `scope != null` and prefix was
+   *            found, else `null`
    */
   def getNamespace(pre: String): String = if (scope eq null) null else scope.getURI(pre)
 
@@ -74,8 +74,8 @@ abstract class Node extends NodeSeq {
    * Same as `attributes.getValue(key)`
    *
    * @param  key of queried attribute.
-   * @return value of <code>UnprefixedAttribute</code> with given key
-   *         in attributes, if it exists, otherwise <code>null</code>.
+   * @return value of `UnprefixedAttribute` with given key
+   *         in attributes, if it exists, otherwise `null`.
    */
   final def attribute(key: String): Option[Seq[Node]] = attributes.get(key)