ame="Author" content="Roy Featherstone">
  <title>Migrating from Spatial_v1 to Spatial_v2</title>
</head>

<body>

<h2>Migrating from Spatial_v1 to Spatial_v2</h2>

<p>
<b><i>Spatial_v2</i></b> is not backward-compatible
with <b><i>spatial_v1</i></b>.&nbsp; Therefore, if you want to port code
from one to the other then a certain amount of editing is required.&nbsp; A
detailed list of changes appears below; but first, here are the main
differences between the two versions:
<ol>
<li>planar-vector functions ha