sys_regcache
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     Description
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     Regular expression searches require a compilation procedure to be performed before the actual search. In order to speedup handling of expressions, a number of compiled expressions are saved in a cache pool: this parameter specifies the size of this pool. Note that setting this parameter has the effect of clearing the cache (even if the pool size if kept unchanged).
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     Type
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     Integer, read/write
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     Values
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     Between 1 and 25
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     Default value
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     3
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     Affects routines
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     Module
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