Arbortext IsoView > Programmer's Reference > Properties > ViewPort
  
ViewPort
This property sets the name of the current viewport (case sensitive). If this property changes, Arbortext IsoView tries to establish this viewport based on the information found in the current illustration.
Introduced with Arbortext IsoView 1.0.
document.ivx1.ViewPort = "View A";
//or
form1.edtVP.value = document.ivx1.ViewPort;
Arbortext IsoView can generate viewports dynamically for a given object. In all places where a string for a viewport is used you can also use the following:
$OBJ_ObjectName or $NAME_ObjectName
where $OBJ_ or $NAME_ precedes the name of the object you want to show and ObjectName is the object’s name. If the name of the object is HS1 the string would be $OBJ_HS1 or $NAME_HS1, $ID_ObjectID