When switching between Windows<->Unix files, it is very useful to have an option to save the file with different EOL style. This option is already available via Save As->Line format, but I wish there was something more handy - to change EOL format for already existing file you gotta go to do save-as, change line format in save as dialog, locate original file and confirm that you want to overwrite it.
Ideally this should be a sub-menu in Document menu with three options in it - each option corresponds to certain EOL format. This will make converting between different formats much easier - choose right format and save.
Thanks!
Alex