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function::stringat − Returns the char at a given position in the string
stringat:long(str:string,pos:long)
str
the string to fetch the character from
pos
the position to get the character from (first character is 0)
This function returns the character at a given position in the string or zero if the string doesn't have as many characters. Reports an error if pos is out of bounds.
tapset::string(3stap)