@vox: thx! but let's wait at least i release an exe! there's always time to donate, enjoy it first! thk you!

@yasu:
Actually rotate works by menu, but a button it's not a problem.
I have to rewrite some parts in morphos: in aros i controlled nearly everything with some hotspots directly on the canvas: i.e. to go to next page i clicked on the right side of the page (near the border). In morphos this doesn't work, so I think i have to take a little care on this.