In programming, the keyword "headstring" can be used to extract a specific number of characters from the beginning of a string. For example, in a function that takes a string as input and uses "headstring" to extract the first 5 characters, the code might look like this:
python def extractheadstring(inputstring): head inputstring:5 return head
In this function, the "headstring" keyword is used to extract the first 5 characters from the input string and return them as a new string.
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