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Wording and Sentence Structure Changes

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@ -22,10 +22,10 @@
> Regular expression is a group of characters or symbols which is used to find a specific pattern from a text.
A regular expression is a pattern that is matched against a subject string from
left to right. The word "Regular expression" is a mouthful, you will usually
find the term abbreviated as "regex" or "regexp". Regular expression is used for
replacing a text within a string, validating form, extract a substring from a
string based upon a pattern match, and so much more.
left to right. Regular expression is used for replacing a text within a string,
validating form, extract a substring from a string based upon a pattern match,
and so much more. The word "Regular expression" is a mouthful, so you will usually
find the term abbreviated as "regex" or "regexp".
Imagine you are writing an application and you want to set the rules for when a
user chooses their username. We want to allow the username to contain letters,