%set(name,abs)
%set(syntax,%%abs(a))
%set(description,%%abs%% returns the absolute value of a floating-point number a. 
%%iabs%% returns the absolute value of integer a. 
Integer arguments to %%abs() are promoted to floating point. 
Floating point arguments to %%iabs() are truncated. 
If an argument is not a valid number\, it will be treated as if it were 0.)
%set(author,)
%set(example,)
%set(seealso,)
