setPrintHeader
Control the printing of header when printing the value of variables or expression.
setPrintHeader(true)
setPrintHeader(false)

Description
Normally the value of an expression (not terminated by a semicolon) is printed without any decoration. However, when setPrintHeader(true) is called, the subsequent display of expressions is preceded by either the name of the variable (if the expression is just a variable) or, otherwise, by the line ans= . Obviously, the header may be suppressed by calling setPrintHeader(false) .
Example
>>2+3
        5
>>a=2
>>a
        2
>>setPrintHeader(true)
>>a
a=
        2
>>2+3
ans=
        5