OpenNewPage

Just initializes the global %Page hash (which stores page data in the internal wiki db format, plus some other info about the page), for a now-being-created page.

  %Page = ();
  $Page{'version'} = 3;      # Data format version
  $Page{'revision'} = 0;     # Number of edited times
  $Page{'tscreate'} = $Now;  # Set once at creation
  $Page{'ts'} = $Now;        # Updated every edit