Rendering And Looping

In the render window , I miss some options that would come handy:

First of all, it can come handy to choose from where to where I want to render.
And then also some option in which you can tell how many time need to be looped.

(and FF songs of FF patterns)
ask myself what other think about FF songs of FF patterns instead of a song of FF or FFF or FFFF patterns. I like the idea of having more songs in a file, which can also be combined as one.

this has already been suggested a lot of times, but it is not as easy to implement as one could imagine.

Take a look to the most recent thread about it.