TO_GRAB_FROM_CALLER is the jCommon module of jLab.

 TO_GRAB_FROM_CALLER  Returns a string to grab variable values from caller.
 
    TO_GRAB_FROM_CALLER is used from within an m-file function which is
    called with a set of variable names, and having input VARARGIN.  
 
    STR=TO_GRAB_FROM_CALLER then returns a string STR such that EVAL(STR) 
    within the m-file will 'grab' all input variables from the calling 
    workspace.  That is, if an m-file is called as follows
 
          MFILE V1 V2 V3
     
    then after EVAL(TO_GRAB_FROM_CALLER) within the m-file, the m-file
    workspace will contain variables named V1, V2, and V3 whose values are
    the same as in the calling workspace.
 
    TO_GRAB_FROM_CALLER(INDEX) where INDEX is e.g. [1 2 3] grabs only the
    values of the Nth the specified input variables, in this example the
    first throught the third.
 
    See also TO_OVERWRITE.
 
    Usage: eval(to_grab_from_caller)
           eval(to_grab_from_caller(index))
    __________________________________________________________________
    This is part of JLAB --- type 'help jlab' for more information
    (C) 2006 J.M. Lilly --- type 'help jlab_license' for details