If you include links to some external web pages or documents in the space menu, those pages do not load correctly when you click on the menu tab. They are usually not displayed at all, or might be displayed in a small frame because of which it is inconvenient to see the whole content. This is because there is no way to adjust the height and width of the frame for external pages.
For the frevvo forms, the frame width is automatically adjusted according to what is set in the form’s Width property. Same is not possible with external pages as frevvo does not know how wide they should be.
Instead of directly including the link to an external page in the space menu, you can embed that external page inside a frevvo form. Then include the link to that frevvo form in your space menu. You can add the HTML required to embed the external web page in a Message control of your form.
For example, see the attached sample form in which a Message control is used to embed a frevvo documentation page. Here is the HTML code that is added in the Message control:
<iframe src="//docs.frevvo.com/d/display/frevvo61/Using+the+Task+List?frameable=true" width="950" height="16500"></iframe>
You can add this form to your space's menu (for example under Help tab). 'Using Task List' page in frevvo documentation will then be embedded and available in your space.