& ulocal()
 
  Syntax: ulocal([<obj>/]<attr>[,<arg>]...)
 
  The ulocal() function is almost identical to u() in Syntax: it 
  evaluates an attribute, either from the object performing the 
  function, or another object that you control or has the same owner 
  as you, passing in arguments and returning the result. When 
  evaluating the fetched attribute, %# refers to the original enactor 
  and not the 'calling' object; 'me' refers to the object that 
  supplied the attribute.
 
  However, unlike the u() function, the global registers r(0) through 
  r(9) (%q0 - %q9) are preserved in their initial state. This means 
  that functions "below" the level of the u() can reset global 
  registers for temporary calculations, without needing to worry about 
  "clobbering" the original values.
 
  This makes ulocal() particularly useful for global or shared code 
  which calls arbitrary u() functions, where global register values 
  need to be preserved from accidental user clobbering.

  (help ulocal()2 for more)