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→Setting General Error and Help masseges
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=====Number of fields in Form=====
int lenght();
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Returns number of fields currently in IO_Form.
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=====Acessing Field Data=====
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void* data(unsigned int fieldnumber=0);
Returns address of the data of "fieldnumber"th, IO_Field in the IO_Form. If "fieldnumber" is zero, then it returns the data of the current IO_Field.
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=====The index operator=====
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IO_Field& operator[](unsigned int index);
