In[1]:= Level[1/2,{-1}]
Out[1]= {1/2}
TreeForm[1/2]
In[2]:= Level[1/2,{-1}]
Out[2]= {1/2}
In[3]:= Level[Unevaluated[1/2],{-1}]
Out[3]= {1,2,-1}
In[4]:= 1/2//FullForm
Out[5]//FullForm= Rational[1,2]
Rational[1,2] in TreeForm,but Times[1,Power[2,-1]] when Level.
In[5]:= Level[Unevaluated[1/2],{-1},Heads->True]
Out[5]= {Times,1,Power,2,-1}
How to comprehend this?
How to obtain TreeForm[Hold@Unevaluated[1/2]]
without Hold and Uevaluated in whole TreeForm's graph or TreeForm@{{{Hold[1/2],b}},b,c}
with out hold?
And How to get {1,2} from Level[1/2, {-1}]?