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When this mechanism is enabled, with the indexed options enabled, and a result's file is opened for the first time, GiD verifies the correctness of the file and gets some information about the results, such as minimum and maximum values, amount of memory needed, position in file; and this information is stored in the index file. The next time the same result's file is opened, only the index file is loaded, reducing the load time considerably. But no results are loaded, they are loaded only on-demand.
If the indexed options are off, then no index file is created or read, and so the parsing of the result's file is perfomed perfumed each time is openendopened, but no results is loaded in memory. They are loaded on demand.
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