str to each matched name.
Can be used with a simList object, because the method for this class
is simply a wrapper for calling ls on the simulation environment
stored in the simList object.export
ls.str.simList(name)## S3 method for class 'missing,simList':
ls.str(name)
## S3 method for class 'simList,missing':
ls.str(pos)
simList object.simList object, used only if name not provided.