Wow, there's a blast from the past...
There are lots of html tricks for displaying plain text with line breaks in a browser. I like to put a bit of CSS styling into my ui_template node, like so:
<style>
#mylog {
min-height: 300px;
padding: 0;
white-space: pre;
}
</style>
<div id="mylog" ng-bind="msg.payload" contenteditable="true">
<!-- file contents will go here -->
</div>
which works well if you just want to show some multi-line text. I've also used Angular syntax to render a payload array into separate <li> elements or table rows, for instance. It really depends on whether your data is unstructured text, or columns of data.
