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ROTATE <factor_matrix>,<#_of_factors>,L  / ROTATION=CLF
makes Jennrich's oblique (simple linear) CLF rotation, i.e.
the sum of absolute values of rotated loadings is minimized.
See
Jennrich, R.I. (2004). Rotation to simple loadings using component
loss functions: The oblique case. (To appear in Psychometrika)
http://preprints.stat.ucla.edu/403/revision5.pdf 

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