04-27-2010
It's a regular expression
^ means at the beginning of a line in some data
. means Any character
\{42\} means 42 of those any characters
If that . was an A or a B, \{42\} would mean 42 A's or B's.
so that line is looking for a pattern ^ (at the beginning of a line) with \{42\} characters of . (any character).
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