gnu_style               GNU-style command line options
is_flag                 Determine if/which vector element are options
                        flags
java_style              Java-style command line options
ms_style                Microsoft-style command line options
opt_assign              Parse options and assign values
opt_expand              Expand opts to full vector
opt_fill                opt_fill
opt_get                 Get option's values from the command-line
opt_get_args            Return arguments to Rscript
opt_get_path            Get path current running script
opt_get_verb            Get verb from the command line
opt_help                Automatic usage/help information
opt_split_args          Split command arguments
opt_style               Get or set the optigrab style
optigrab                Optigrab
str_to_opts             Split a string bases on whitespace
this_file               this_file
