This package is a small LaTeX package that adds a collection of simple macros for parentheses and bullets. It exists for one purpose only: To be loaded by documents which were originally typeset using the package SemanTeX, but which have been stripped of SemanTeX markup using the package stripsemantex which is part of SemanTeX. Therefore, unless your document is one of those, simply don't use this package. And even if your document is one of those, there is a good chance you will not have to load it after all. In most cases, you will be able to replace the macros it provides by macros from other packages.