#!F-adobe-helvetica-medium-r-normal--18*
#!N 
#!CDarkGreen  #!Rvarsv Variables 
as Right-Side Values #!N #!EC #!N #!N The values of variables 
used in a macro in expressions and as function arguments are 
found according to standard dynamic scoping rules. If the variable exists 
in the macro's local environment, then its value is used. Otherwise, 
the enclosing environments, all the way to the top-level environment, are 
searched to locate the variable. The value used is the value 
associated with the first instance of the variable. If the variable 
is not found in any environment, then the value  #!F-adobe-times-bold-r-normal--18*   NULL 
#!EF is used. #!N #!N #!N  #!F-adobe-times-medium-i-normal--18*   Next Topic #!EF #!N 
#!N  #!Lall558,dxall559 h Example  #!EL  #!N  #!F-adobe-times-medium-i-normal--18*   #!N 
