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The current position within a buffer.
The value of cursor is always between 0 and the value set in the size property. A value can be assigned to this property.
If the cursor is set beyond the end of a buffer, the buffer is extended to accommodate the new position and filled with null bytes. Setting the cursor to a value less than 0 places the cursor at the beginning of the buffer, position 0.
For examples, see getString() Method and subBuffer() Method.