TODO:

• coverpage, sequences
• binaries
• saving bodies and annotations/histories
• paragraph styles
• links/targets toolbar
• finish pasting (relocate nested P elements)
• pack text items into P
• add/remove links
• validation
• font size setup [via size on body element?]
• search
• replace
• proper saving (temp copy+rename)
• merge sections @ drop images
• $C/$U/$L/$I/$B/$i/$b @ sane error messages on regexp errors
• hourglass where needed @ normalization after d&d