ns(<num>{,<int>})
string
A numeric value as a string.
<num>
      The numeric value to be converted to a string.
<int>
The number of decimal 
 places to be printed after a decimal point. If omitted, the value of the 
 system numeric dec_places is used. Trailing zero’s 
 are suppressed.
Compute π to 10 places of decimals.
string os = ns(pi,10)
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 Functions:  | 
 fmt (string)  | 
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 Identifiers:  | 
 dec_places (numeric)  |