This package is based on code (posted long ago to comp.text.tex by Donald Arseneau) to equalise the height of subscripts in maths. The default behaviour is to place subscripts slightly lower when there is a superscript as well, but this can look odd in some situations.
The author is Will Robertson. The package is Copyright © 2007 Will Robertson.
License: lppl Version: 0.1 Catalogued: 2014-02-26