Any object can be put into a popup window. This works when the object is referenced from compound document.

There needs to be a frame object that defines the size of the popup window. Then in the link tag the frame object is referenced by a target attribute. Just like in a web browser if two links use the same target then the same popup window will get used for both.

The href of the a link can be any otrunk object. If the object doesn't have a proper view class then there will be a error message in the popup window.

<OTFrame local_id="tech_hint_frame" >
  <title>Technical Hint Frame</title>
  <width>400</width>
  <height>400</height>
</OTFrame>

....

<!-- this is within the text of compound document -->
<a href="${tech_hint_1}" target="${tech_hint_frame}">
see temperature technical hint
</a>