+- find a better behavior for vertical space tool across page boundaries ?
+- key mappings (pgup/dn for full page, up/dn for scroll)
+- copy/paste of an entire page (beware if PDF bg is not compatible!)
+- simple drawing tools: rectangles, ellipses
+- option to save all annotated files within the .xoj
+- non-antialiased version for handhelds
+- customize autogenerated save file names