--- a/pre_process.xml	Thu Jun 23 15:26:15 2016 -0400
+++ b/pre_process.xml	Fri Feb 16 09:14:23 2018 -0500
@@ -85,7 +85,8 @@
                             <expand macro="multitype_input"/>
                             <section name="options" title="Advanced Options" expanded="False">
                                 <!--feature_range-->
-                                <param argument="copy" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true" label="Use a copy of data for precomputing normalization" help=" "/>
+                                <param argument="copy" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true"
+                                    label="Use a copy of data for precomputing normalization" help=" "/>
                             </section>
                         </when>            
                         <when value="PolynomialFeatures">
@@ -95,16 +96,19 @@
                                 <param argument="interaction_only" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="false" label="Produce interaction features only" help="(Features that are products of at most degree distinct input features) "/>
                                 <param argument="include_bias" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true" label="Include a bias column" help="Feature in which all polynomial powers are zero "/>
                             </section>
-                        </when>            
+                        </when>
                         <when value="RobustScaler">
                             <expand macro="multitype_input"/>
                             <section name="options" title="Advanced Options" expanded="False">
                                 <!--=True, =True, copy=True-->
-                                <param argument="with_centering" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true" label="Center the data before scaling" help=" "/>
-                                <param argument="with_scaling" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true" label="Scale the data to interquartile range" help=" "/>
-                                <param argument="copy" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true" label="Use a copy of data for inplace scaling" help=" "/>
+                                <param argument="with_centering" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true"
+                                    label="Center the data before scaling" help=" "/>
+                                <param argument="with_scaling" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true"
+                                    label="Scale the data to interquartile range" help=" "/>
+                                <param argument="copy" type="boolean" optional="true" truevalue="booltrue" falsevalue="boolflase" checked="true"
+                                    label="Use a copy of data for inplace scaling" help=" "/>
                             </section>
-                        </when>            
+                        </when>
                     </expand>
                 </conditional>
             </when>
@@ -114,9 +118,11 @@
                     <expand macro="sparse_preprocessors"/>
                     <expand macro="sparse_preprocessor_options"/>
                 </conditional>
-            </when>            
+            </when>
         </conditional>
-        <param name="save" type="boolean" truevalue="booltrue" falsevalue="boolflase" checked="false" label="Save the preprocessor" help="Saves the preprocessor after fitting to the data. The preprocessor can then be passed to other tools and used in later operations."/>
+        <param name="save" type="boolean" truevalue="booltrue" falsevalue="boolflase" checked="false"
+            label="Save the preprocessor"
+            help="Saves the preprocessor after fitting to the data. The preprocessor can then be passed to other tools and used in later operations."/>
     </inputs>
     <outputs>
         <data format="tabular" name="outfile_transform" from_work_dir="./output"/>
@@ -220,4 +226,4 @@
         ]]>
     </help>
     <expand macro="sklearn_citation"/>
-</tool>
\ No newline at end of file
+</tool>