Complete 'save' page intro + new section

save.md

@@ -4,6 +4,9 @@ You can save your sprite using *File > Save* menu.
 
 Aseprite uses `.aseprite` (or `.ase`) file types to save full sprite
 information (layers, frames, tags, palettes, etc.). But you can save
+your sprite as other file types if you don't need all this information.
+For example, you can [open](open.md) a `.png` file, editing it,
+and save it again as `.png` (without using the `.aseprite` format).
 
 ## Save as a copy
 
@@ -23,6 +26,12 @@ a file type for static images. E.g. `frame1.png` where `1` specifies
 the number of the first frame, and `.png` the static file type used to
 save each frame. See how to [load a sequence of images](open.md#loading-image-sequences).
 
+## Save just one frame
+
+Since **Aseprite v1.2-beta2** you can save one frame (or the set of selected frames/layers):
+
+<p><a href="http://imgur.com/fDyDtnm"><img src="http://i.imgur.com/fDyDtnm.gif" title="source: imgur.com" /></a></p>
+
 ---
 
 **SEE ALSO**