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-{\rtf1\ansi\ansicpg1252\cocoartf949\cocoasubrtf460
-{\fonttbl\f0\fmodern\fcharset0 Courier;}
-{\colortbl;\red255\green255\blue255;}
-\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\sl264\slmult1\ql\qnatural\pardirnatural
-
-\f0\fs28 \cf0 Sometimes a commodity has several forms which are all equivalent. An\
-example of this is time. Whether tracked in terms of minutes, hours\
-or days, it should be possible to convert between the various forms.\
-Doing this requires the use of commodity equivalencies.\
-\
-For example, you might have the following two postings, one which\
-transfers an hour of time into a @samp\{Billable\} account, and another\
-which decreases the same account by ten minutes. The resulting report\
-will indicate that fifty minutes remain:\
-\
-@smallexample\
-2005/10/01 Work done for company\
- Billable:Client 1h\
- Project:XYZ\
- \
-2005/10/02 Return ten minutes to the project\
- Project:XYZ 10m\
- Billable:Client\
-@end smallexample\
-\
-Reporting the balance for this ledger file produces:\
-\
-@smallexample\
- 50.0m Billable:Client\
- -50.0m Project:XYZ\
-@end smallexample\
-\
-This example works because ledger already knows how to handle seconds,\
-minutes and hours, as part of its time tracking support. Defining\
-other equivalencies is simple. The following is an example that\
-creates data equivalencies, helpful for tracking bytes, kilobytes,\
-megabytes, and more:\
-\
-@smallexample\
-C 1.00 Kb = 1024 b\
-C 1.00 Mb = 1024 Kb\
-C 1.00 Gb = 1024 Mb\
-C 1.00 Tb = 1024 Gb\
-@end smallexample\
-\
-Each of these definitions correlates a commodity (such as @samp\{Kb\})\
-and a default precision, with a certain quantity of another commodity.\
-In the above example, kilobytes are reporetd with two decimal places\
-of precision and each kilobyte is equal to 1024 bytes.\
-\
-Equivalency chains can be as long as desired. Whenever a commodity\
-would report as a decimal amount (less than @samp\{1.00\}), the next\
-smallest commodity is used. If a commodity could be reported in terms\
-of a higher commodity without resulting to a partial fraction, then\
-the larger commodity is used.} \ No newline at end of file