12 + replace object with another, keeping children
14 + write tmp file for current dialog/panel/etc.
18 + select same notebook pages after update
20 - put some default values in tree ctrl etc.
22 - special (fast) update for some values: pos/size, value/content, sizeritem
23 stuff (?), well, as much as possible
25 - highlighting with better method
27 - import XRC/WXR files
29 + disable some window creation when it's not valid
31 + selecting object by clicking in test window
33 + hidden items should not be highlighted