diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools.py b/extensions/fablabchemnitz/vpypetools/vpypetools.py
index b3783fc3..f1ca982d 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools.py
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools.py
@@ -49,8 +49,7 @@ CLI / API docs:
 - https://vpype.readthedocs.io/en/stable/api/vpype.html#module-vpype
 
 Todo's
-- allow to change pen width / opacity in vpype viewer: https://github.com/abey79/vpype/issues/243
-- command chain is really slow on Windows (takes ~5 times longer than Linux). Find ways to speed up
+- find some python code to auto-convert strokes and objects to paths
 """
 
 class vpypetools (inkex.EffectExtension):
@@ -340,8 +339,8 @@ class vpypetools (inkex.EffectExtension):
         # save the vpype document to new svg file and close it afterwards
         output_file = self.options.input_file + ".vpype.svg"
         output_fileIO = open(output_file, "w", encoding="utf-8")
-        # vpype.write_svg(output_fileIO, doc, page_size=None, center=False, source_string='', layer_label_format='%d', show_pen_up=self.options.output_trajectories, color_mode='layer', no_basic_shapes = True)       
-        vpype.write_svg(output_fileIO, doc, page_size=None, center=False, source_string='', layer_label_format='%d', show_pen_up=self.options.output_trajectories, color_mode='layer')       
+        vpype.write_svg(output_fileIO, doc, page_size=None, center=False, source_string='', layer_label_format='%d', show_pen_up=self.options.output_trajectories, color_mode='layer', single_path = True)       
+        #vpype.write_svg(output_fileIO, doc, page_size=None, center=False, source_string='', layer_label_format='%d', show_pen_up=self.options.output_trajectories, color_mode='layer')       
         #vpype.write_svg(output_fileIO, doc, page_size=(self.svg.unittouu(self.document.getroot().get('width')), self.svg.unittouu(self.document.getroot().get('height'))), center=False, source_string='', layer_label_format='%d', show_pen_up=self.options.output_trajectories, color_mode='layer')       
         output_fileIO.close()
         
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_filter.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_filter.inx
index fd31f26b..2720a739 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_filter.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_filter.inx
@@ -25,7 +25,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_freemode.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_freemode.inx
index 6bad9648..1af8716c 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_freemode.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_freemode.inx
@@ -30,7 +30,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_linemerge.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_linemerge.inx
index 7e8c5dda..39713980 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_linemerge.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_linemerge.inx
@@ -20,7 +20,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_linesort.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_linesort.inx
index f79e2a6b..5853083e 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_linesort.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_linesort.inx
@@ -19,7 +19,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_multipass.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_multipass.inx
index e95e28e0..e0aebf81 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_multipass.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_multipass.inx
@@ -19,7 +19,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_occult.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_occult.inx
index 566ee306..07ecc77d 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_occult.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_occult.inx
@@ -19,7 +19,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_relooping.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_relooping.inx
index 86f7530a..979c985c 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_relooping.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_relooping.inx
@@ -19,7 +19,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_splitall.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_splitall.inx
index 4f0b0ed9..120ac9f2 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_splitall.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_splitall.inx
@@ -18,7 +18,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>
diff --git a/extensions/fablabchemnitz/vpypetools/vpypetools_trim.inx b/extensions/fablabchemnitz/vpypetools/vpypetools_trim.inx
index 8c85d2de..240730e1 100644
--- a/extensions/fablabchemnitz/vpypetools/vpypetools_trim.inx
+++ b/extensions/fablabchemnitz/vpypetools/vpypetools_trim.inx
@@ -20,7 +20,7 @@
 			</param>
 		    <param name="flattenbezier" type="bool" gui-text="Quantization (flatten bezier curves to polylines)" gui-description="Convert bezier curves to polylines. Automatically enabled if 'Multilayer/document' (quantization parameter)">true</param>	
 			<param name="flatness" type="float" min="0.001" max="99999.000" precision="3" gui-text="Flatness (tolerance)" gui-description="Minimum flatness = 0.001. The smaller the value the more fine segments you will get. This value is also used by option 'simplify'">0.100</param>
-			<param name="decimals" type="float" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
+			<param name="decimals" type="int" min="0" max="16" gui-text="Decimals" gui-description="Accuracy for imported lines' coordinates into vpype. Does not work for 'Multilayer/document'">3</param>
 			<param name="simplify" type="bool" gui-text="Simplify geometry" gui-description="Reduces significantly the number of segments used to approximate the curve while still guaranteeing an accurate conversion, but may increase the execution time. Does not work for 'Singlelayer/paths'">false</param>
 			<param name="parallel" type="bool" gui-text="Parallelize Simplify geometry" gui-description="Enables multiprocessing for the SVG conversion. This is recommended ONLY when using 'Simplify geometry' on large SVG files with many curved elements. Does not work for 'Singlelayer/paths'">false</param>			
 			<spacer/>