anchor.diff:  
   The _node-name_ component specifies the name of the node. It shall be 1
   to 31 characters in length and consist solely of characters from the set
  -of characters in Table 2-1.
  -
  +of characters in <<node-name-characters>>
  +
  +[[node-name-characters]]
   .Characters for node names
   [option="header", cols="^10,30", width="200", align="center"]
   |===
  
positive.code: interrupt-parent = < &ipic >;
  ----
  
  In Figure 2-4, the ``soc`` node specifies a _ranges_ property of
  
  [listing]
  <0x0 0xe0000000 0x00100000>;
  
negative.code: Alias names shall be a lowercase text strings of 1 to 31 characters from
  the following set of characters.
  
  .Characters for alias names
  [options="header", cols="^10,30", width="50"]
  |===
  |Character |Description
  