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5.4.15.13. delete


>>-delete(n---+---------+--)-------------------------------><
              +-,length-+

Deletes length characters from the buffer beginning at the n'th character. If length is omitted, or if length is greater than the number of characters from n to the end of the buffer, the method deletes the remaining buffer contents (including the n'th character). The length must be a positive integer or zero. The n must be a positive integer. If n is greater than the length of the buffer or zero, the method does not modify the buffer content.