If you want to find the number of lines of source code for your project you can install a small app from Mac Ports:
sudo port install SLOCCount
Then go to the root directory of your project and run sloccount.
The output would be:
SLOC Directory SLOC-by-Language (Sorted) 63 ClientStackOfStrings objc=63 0 ClientStackOfStrings.xcodeproj (none) Totals grouped by language (dominant language first): objc: 63 (100.00%) Total Physical Source Lines of Code (SLOC) = 63 Development Effort Estimate, Person-Years (Person-Months) = 0.01 (0.13) (Basic COCOMO model, Person-Months = 2.4 * (KSLOC**1.05)) Schedule Estimate, Years (Months) = 0.10 (1.16) (Basic COCOMO model, Months = 2.5 * (person-months**0.38)) Estimated Average Number of Developers (Effort/Schedule) = 0.11 Total Estimated Cost to Develop = $ 1,482 (average salary = $56,286/year, overhead = 2.40). SLOCCount, Copyright (C) 2001-2004 David A. Wheeler SLOCCount is Open Source Software/Free Software, licensed under the GNU GPL. SLOCCount comes with ABSOLUTELY NO WARRANTY, and you are welcome to redistribute it under certain conditions as specified by the GNU GPL license; see the documentation for details.
This short tutorial describes epub format as is exported from Pages and as is recognized by iBook app from iPhone and iPad.
The extension for an epub file is .epub.
The file contains a zip archive with the following (simple) structure:
mimetype – file
META-INF – directory
META-INF/container.xml – file
OPS – directory
OPS/cover.xhtml – file
OPS/epb.ncx – file
OPS/epb.opf – file
OPS/CSS – directory
OPS/CSS/book.css – file
OPS/IMAGES – directory
Now we will explain the purpose of those files.