$archiver NSKeyedArchiver $objects $null $class CF$UID 37 NS.objects CF$UID 2 $class CF$UID 33 NS.keys CF$UID 3 CF$UID 4 CF$UID 5 NS.objects CF$UID 6 CF$UID 7 CF$UID 35 Title Text Date Untitled Snapshot $class CF$UID 34 NSAttributes CF$UID 10 NSDelegate CF$UID 0 NSString CF$UID 8 $class CF$UID 9 NS.string Everything begins with a journal file---the anatomy of which is covered in detail in chapter one. To review: a @emph{journal} contains one or more @emph{transactions}, each of which refers to two or more @emph{postings}. A @emph{posting} specifies that a given @emph{amount} is added to, or subtracted from, an @emph{account}. (@emph{Accounts} may be nested hierarchically by separating the elements using a colon). Lastly, an @emph{amount} is a figure representing a given @emph{quantity} of a @emph{commodity}. Here follows a review of these terms, which are all used extensively throughout this chapter: @table @emph @item journal A journal is a data file containing a series of transactions. @item transaction a transaction relates a group of two or more postings, with the absolute constraint that the total sum of a transaction's postings must equal zero. That is, every transaction in a journal must @emph{balance} to zero. @item posting Postings record how commodities are moved between accounts. If you spent money on a movie ticket, for example, such a transaction would have two postings: One to show how the money was taken from your wallet, and another to show how it was applied to your movie expenses. @item account An account @item amount @item quantity @item commodity @end table $classes NSMutableString NSString NSObject $classname NSMutableString $class CF$UID 33 NS.keys CF$UID 11 CF$UID 12 NS.objects CF$UID 13 CF$UID 30 NSParagraphStyle NSFont $class CF$UID 29 NSAlignment 4 NSLineHeightMultiple 1.1000000238418579 NSTabStops CF$UID 14 $class CF$UID 28 NS.objects CF$UID 15 CF$UID 17 CF$UID 18 CF$UID 19 CF$UID 20 CF$UID 21 CF$UID 22 CF$UID 23 CF$UID 24 CF$UID 25 CF$UID 26 CF$UID 27 $class CF$UID 16 NSLocation 28 $classes NSTextTab NSObject $classname NSTextTab $class CF$UID 16 NSLocation 56 $class CF$UID 16 NSLocation 84 $class CF$UID 16 NSLocation 112 $class CF$UID 16 NSLocation 140 $class CF$UID 16 NSLocation 168 $class CF$UID 16 NSLocation 196 $class CF$UID 16 NSLocation 224 $class CF$UID 16 NSLocation 252 $class CF$UID 16 NSLocation 280 $class CF$UID 16 NSLocation 308 $class CF$UID 16 NSLocation 336 $classes NSArray NSObject $classname NSArray $classes NSParagraphStyle NSObject $classname NSParagraphStyle $class CF$UID 32 NSName CF$UID 31 NSSize 14 NSfFlags 16 Courier $classes NSFont NSObject $classname NSFont $classes NSDictionary NSObject $classname NSDictionary $classes KBWordCountingTextStorage NSTextStorage NSMutableAttributedString NSAttributedString NSObject $classname KBWordCountingTextStorage $class CF$UID 36 NS.time 267380389.41803801 $classes NSDate NSObject $classname NSDate $classes NSMutableArray NSArray NSObject $classname NSMutableArray $top Snapshots CF$UID 1 $version 100000