Ed-pad is a project mainly written in OBJECTIVE-C and C, it's free.
git submodule add git://github.com/facebook/three20.git three20 python three20/src/scripts/ttmodule.py -p ./ed-pad.xcodeproj Three20
Add the extThree20XML.xcodeproj file to your project. Add libextThree20XML.a to your "Link Binary With Libraries" phase, and add extThree20XML as a dependency.
#import "extThree20XML/extThree20XML.h"
http://iosguy.com/2010/09/06/saving-work-with-three20/ http://github.com/erica/uidevice-extension/
nib2objc testnib2objc.xib > testnib2objc.m
ibtool --generate-strings-file MainMenu.strings MainMenu.xib ibtool --strings-file MyNib.strings --write MyNewNib.nib MyNib.nib
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