Programming Question

[Dwood]

When I see SomeText<T> in a programming file, what am I looking at? What's it called when a programmer does that? I'm looking for more info but I don't see any data on it from any of my Googling.

Edit:

        public static TResult SafeInvoke<T, TResult>(this T isi, Func<T, TResult> call) where T : ISynchronizeInvoke
        {
            if (isi.InvokeRequired) { 
                IAsyncResult result = isi.BeginInvoke(call, new object[] { isi }); 
                object endResult = isi.EndInvoke(result); return (TResult)endResult; 
            }
            else
                return call(isi);
        }

For example, in the above C# code, what's going on? Or rather, what terms describe this?