How to write a Letter of Support (?)

<p>The university i got accepted to is asking for a letter of support in order to process my visa. Problem is, they don’t have a form for it, so I will have to type one up from scratch (made sure by calling em). Anyways, does anyone know what the format should be and what should be included in it? I tried searching Google for templates and samples but I got very different results… Thanks</p>

<p>Support as in financial support?</p>