Fixes a function parameter problem; Provides a docstring.
Fixes a function parameter problem; Provides a docstring.

data-exp-lab/girder,adsorensen/girder,adsorensen/girder,kotfic/girder,manthey/girder,jbeezley/girder,manthey/girder,Xarthisius/girder,sutartmelson/girder,RafaelPalomar/girder,girder/girder,kotfic/girder,girder/girder,RafaelPalomar/girder,sutartmelson/girder,kotfic/girder,data-exp-lab/girder,jbeezley/girder,girder/girder,sutartmelson/girder,manthey/girder,data-exp-lab/girder,RafaelPalomar/girder,Kitware/girder,Kitware/girder,girder/girder,kotfic/girder,Kitware/girder,adsorensen/girder,RafaelPalomar/girder,Xarthisius/girder,RafaelPalomar/girder,Xarthisius/girder,data-exp-lab/girder,Kitware/girder,sutartmelson/girder,kotfic/girder,data-exp-lab/girder,sutartmelson/girder,manthey/girder,adsorensen/girder,adsorensen/girder,Xarthisius/girder,jbeezley/girder,Xarthisius/girder,jbeezley/girder