diff --git a/FlatCAMApp.py b/FlatCAMApp.py
index b2b725d2..e86a6cfd 100644
--- a/FlatCAMApp.py
+++ b/FlatCAMApp.py
@@ -329,7 +329,8 @@ class App:
     """
 
     log = logging.getLogger('base')
-    log.setLevel(logging.DEBUG)
+    #log.setLevel(logging.DEBUG)
+    log.setLevel(logging.WARNING)
     formatter = logging.Formatter('[%(levelname)s] %(message)s')
     handler = logging.StreamHandler()
     handler.setFormatter(formatter)
diff --git a/ObjectUI.py b/ObjectUI.py
index ae87033d..fd9315e9 100644
--- a/ObjectUI.py
+++ b/ObjectUI.py
@@ -50,6 +50,9 @@ class ObjectUI(Gtk.VBox):
         ## Scale
         self.scale_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.scale_label.set_markup('<b>Scale:</b>')
+        self.scale_label.set_tooltip_markup(
+            "Change the size of the object."
+        )
         self.pack_start(self.scale_label, expand=False, fill=False, padding=2)
 
         grid5 = Gtk.Grid(column_spacing=3, row_spacing=2)
@@ -57,6 +60,10 @@ class ObjectUI(Gtk.VBox):
 
         # Factor
         l10 = Gtk.Label('Factor:', xalign=1)
+        l10.set_tooltip_markup(
+            "Factor by which to multiply\n"
+            "geometric features of this object."
+        )
         grid5.attach(l10, 0, 0, 1, 1)
         self.scale_entry = FloatEntry()
         self.scale_entry.set_text("1.0")
@@ -64,11 +71,17 @@ class ObjectUI(Gtk.VBox):
 
         # GO Button
         self.scale_button = Gtk.Button(label='Scale')
+        self.scale_button.set_tooltip_markup(
+            "Perform scaling operation."
+        )
         self.pack_start(self.scale_button, expand=False, fill=False, padding=2)
 
         ## Offset
         self.offset_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.offset_label.set_markup('<b>Offset:</b>')
+        self.offset_label.set_tooltip_markup(
+            "Change the position of this object."
+        )
         self.pack_start(self.offset_label, expand=False, fill=False, padding=2)
 
         grid6 = Gtk.Grid(column_spacing=3, row_spacing=2)
@@ -76,12 +89,19 @@ class ObjectUI(Gtk.VBox):
 
         # Vector
         l11 = Gtk.Label('Offset Vector:', xalign=1)
+        l11.set_tooltip_markup(
+            "Amount by which to move the object\n"
+            "in the x and y axes in (x, y) format."
+        )
         grid6.attach(l11, 0, 0, 1, 1)
         self.offsetvector_entry = EvalEntry()
         self.offsetvector_entry.set_text("(0.0, 0.0)")
         grid6.attach(self.offsetvector_entry, 1, 0, 1, 1)
 
         self.offset_button = Gtk.Button(label='Scale')
+        self.offset_button.set_tooltip_markup(
+            "Perform the offset operation."
+        )
         self.pack_start(self.offset_button, expand=False, fill=False, padding=2)
 
     def set_field(self, name, value):
@@ -109,25 +129,43 @@ class CNCObjectUI(ObjectUI):
 
         # Plot CB
         self.plot_cb = FCCheckBox(label='Plot')
+        self.plot_cb.set_tooltip_markup(
+            "Plot (show) this object."
+        )
         grid0.attach(self.plot_cb, 0, 0, 2, 1)
 
         # Tool dia for plot
         l1 = Gtk.Label('Tool dia:', xalign=1)
+        l1.set_tooltip_markup(
+            "Diameter of the tool to be\n"
+            "rendered in the plot."
+        )
         grid0.attach(l1, 0, 1, 1, 1)
         self.tooldia_entry = LengthEntry()
         grid0.attach(self.tooldia_entry, 1, 1, 1, 1)
 
         # Update plot button
         self.updateplot_button = Gtk.Button(label='Update Plot')
+        self.updateplot_button.set_tooltip_markup(
+            "Update the plot."
+        )
         self.custom_box.pack_start(self.updateplot_button, expand=False, fill=False, padding=2)
 
         ## Export G-Code
         self.export_gcode_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.export_gcode_label.set_markup("<b>Export G-Code:</b>")
+        self.export_gcode_label.set_tooltip_markup(
+            "Export and save G-Code to\n"
+            "make this object to a file."
+        )
         self.custom_box.pack_start(self.export_gcode_label, expand=False, fill=False, padding=2)
 
         # GO Button
         self.export_gcode_button = Gtk.Button(label='Export G-Code')
+        self.export_gcode_button.set_tooltip_markup(
+            "Opens dialog to save G-Code\n"
+            "file."
+        )
         self.custom_box.pack_start(self.export_gcode_button, expand=False, fill=False, padding=2)
 
 
@@ -149,11 +187,19 @@ class GeometryObjectUI(ObjectUI):
 
         # Plot CB
         self.plot_cb = FCCheckBox(label='Plot')
+        self.plot_cb.set_tooltip_markup(
+            "Plot (show) this object."
+        )
         grid0.attach(self.plot_cb, 0, 0, 1, 1)
 
         ## Create CNC Job
         self.cncjob_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.cncjob_label.set_markup('<b>Create CNC Job:</b>')
+        self.cncjob_label.set_tooltip_markup(
+            "Create a CNC Job object\n"
+            "tracing the contours of this\n"
+            "Geometry object."
+        )
         self.custom_box.pack_start(self.cncjob_label, expand=True, fill=False, padding=2)
 
         grid1 = Gtk.Grid(column_spacing=3, row_spacing=2)
@@ -161,32 +207,57 @@ class GeometryObjectUI(ObjectUI):
 
         # Cut Z
         l1 = Gtk.Label('Cut Z:', xalign=1)
+        l1.set_tooltip_markup(
+            "Cutting depth (negative)\n"
+            "below the copper surface."
+        )
         grid1.attach(l1, 0, 0, 1, 1)
         self.cutz_entry = LengthEntry()
         grid1.attach(self.cutz_entry, 1, 0, 1, 1)
 
         # Travel Z
         l2 = Gtk.Label('Travel Z:', xalign=1)
+        l2.set_tooltip_markup(
+            "Height of the tool when\n"
+            "moving without cutting."
+        )
         grid1.attach(l2, 0, 1, 1, 1)
         self.travelz_entry = LengthEntry()
         grid1.attach(self.travelz_entry, 1, 1, 1, 1)
 
         l3 = Gtk.Label('Feed rate:', xalign=1)
+        l3.set_tooltip_markup(
+            "Cutting speed in the XY\n"
+            "plane in units per minute"
+        )
         grid1.attach(l3, 0, 2, 1, 1)
         self.cncfeedrate_entry = LengthEntry()
         grid1.attach(self.cncfeedrate_entry, 1, 2, 1, 1)
 
         l4 = Gtk.Label('Tool dia:', xalign=1)
+        l4.set_tooltip_markup(
+            "The diameter of the cutting\n"
+            "tool (just for display)."
+        )
         grid1.attach(l4, 0, 3, 1, 1)
         self.cnctooldia_entry = LengthEntry()
         grid1.attach(self.cnctooldia_entry, 1, 3, 1, 1)
 
         self.generate_cnc_button = Gtk.Button(label='Generate')
+        self.generate_cnc_button.set_tooltip_markup(
+            "Generate the CNC Job object."
+        )
         self.custom_box.pack_start(self.generate_cnc_button, expand=True, fill=False, padding=2)
 
         ## Paint Area
         self.paint_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.paint_label.set_markup('<b>Paint Area:</b>')
+        self.paint_label.set_tooltip_markup(
+            "Creates tool paths to cover the\n"
+            "whole area of a polygon (remove\n"
+            "all copper). You will be asked\n"
+            "to click on the desired polygon."
+        )
         self.custom_box.pack_start(self.paint_label, expand=True, fill=False, padding=2)
 
         grid2 = Gtk.Grid(column_spacing=3, row_spacing=2)
@@ -194,24 +265,43 @@ class GeometryObjectUI(ObjectUI):
 
         # Tool dia
         l5 = Gtk.Label('Tool dia:', xalign=1)
+        l5.set_tooltip_markup(
+            "Diameter of the tool to\n"
+            "be used in the operation."
+        )
         grid2.attach(l5, 0, 0, 1, 1)
         self.painttooldia_entry = LengthEntry()
         grid2.attach(self.painttooldia_entry, 1, 0, 1, 1)
 
         # Overlap
         l6 = Gtk.Label('Overlap:', xalign=1)
+        l6.set_tooltip_markup(
+            "How much (fraction) of the tool\n"
+            "width to overlap each tool pass."
+        )
         grid2.attach(l6, 0, 1, 1, 1)
         self.paintoverlap_entry = LengthEntry()
         grid2.attach(self.paintoverlap_entry, 1, 1, 1, 1)
 
         # Margin
         l7 = Gtk.Label('Margin:', xalign=1)
+        l7.set_tooltip_markup(
+            "Distance by which to avoid\n"
+            "the edges of the polygon to\n"
+            "be painted."
+        )
         grid2.attach(l7, 0, 2, 1, 1)
         self.paintmargin_entry = LengthEntry()
         grid2.attach(self.paintmargin_entry, 1, 2, 1, 1)
 
         # GO Button
         self.generate_paint_button = Gtk.Button(label='Generate')
+        self.generate_paint_button.set_tooltip_markup(
+            "After clicking here, click inside\n"
+            "the polygon you wish to be painted.\n"
+            "A new Geometry object with the tool\n"
+            "paths will be created."
+        )
         self.custom_box.pack_start(self.generate_paint_button, expand=True, fill=False, padding=2)
 
 
@@ -232,44 +322,77 @@ class ExcellonObjectUI(ObjectUI):
         self.custom_box.pack_start(grid0, expand=True, fill=False, padding=2)
 
         self.plot_cb = FCCheckBox(label='Plot')
+        self.plot_cb.set_tooltip_markup(
+            "Plot (show) this object."
+        )
         grid0.attach(self.plot_cb, 0, 0, 1, 1)
 
         self.solid_cb = FCCheckBox(label='Solid')
+        self.solid_cb.set_tooltip_markup(
+            "Solid circles."
+        )
         grid0.attach(self.solid_cb, 1, 0, 1, 1)
 
         ## Create CNC Job
         self.cncjob_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.cncjob_label.set_markup('<b>Create CNC Job</b>')
+        self.cncjob_label.set_tooltip_markup(
+            "Create a CNC Job object\n"
+            "for this drill object."
+        )
         self.custom_box.pack_start(self.cncjob_label, expand=True, fill=False, padding=2)
 
         grid1 = Gtk.Grid(column_spacing=3, row_spacing=2)
         self.custom_box.pack_start(grid1, expand=True, fill=False, padding=2)
 
         l1 = Gtk.Label('Cut Z:', xalign=1)
+        l1.set_tooltip_markup(
+            "Drill depth (negative)\n"
+            "below the copper surface."
+        )
         grid1.attach(l1, 0, 0, 1, 1)
         self.cutz_entry = LengthEntry()
         grid1.attach(self.cutz_entry, 1, 0, 1, 1)
 
         l2 = Gtk.Label('Travel Z:', xalign=1)
+        l2.set_tooltip_markup(
+            "Tool height when travelling\n"
+            "across the XY plane."
+        )
         grid1.attach(l2, 0, 1, 1, 1)
         self.travelz_entry = LengthEntry()
         grid1.attach(self.travelz_entry, 1, 1, 1, 1)
 
         l3 = Gtk.Label('Feed rate:', xalign=1)
+        l3.set_tooltip_markup(
+            "Tool speed while drilling\n"
+            "(in units per minute)."
+        )
         grid1.attach(l3, 0, 2, 1, 1)
         self.feedrate_entry = LengthEntry()
         grid1.attach(self.feedrate_entry, 1, 2, 1, 1)
 
         l4 = Gtk.Label('Tools:', xalign=1)
+        l4.set_tooltip_markup(
+            "Which tools to include\n"
+            "in the CNC Job."
+        )
         grid1.attach(l4, 0, 3, 1, 1)
         boxt = Gtk.Box()
         grid1.attach(boxt, 1, 3, 1, 1)
         self.tools_entry = FCEntry()
         boxt.pack_start(self.tools_entry, expand=True, fill=False, padding=2)
         self.choose_tools_button = Gtk.Button(label='Choose...')
+        self.choose_tools_button.set_tooltip_markup(
+            "Choose the tools\n"
+            "from a list."
+        )
         boxt.pack_start(self.choose_tools_button, expand=True, fill=False, padding=2)
 
         self.generate_cnc_button = Gtk.Button(label='Generate')
+        self.generate_cnc_button.set_tooltip_markup(
+            "Generate the CNC Job."
+        )
         self.custom_box.pack_start(self.generate_cnc_button, expand=True, fill=False, padding=2)
 
 
@@ -277,6 +400,7 @@ class GerberObjectUI(ObjectUI):
     """
     User interface for Gerber objects.
     """
+
     def __init__(self):
         ObjectUI.__init__(self, title='Gerber Object')
 
@@ -290,66 +414,115 @@ class GerberObjectUI(ObjectUI):
 
         # Plot CB
         self.plot_cb = FCCheckBox(label='Plot')
+        self.plot_cb.set_tooltip_markup(
+            "Plot (show) this object."
+        )
         grid0.attach(self.plot_cb, 0, 0, 1, 1)
 
         # Solid CB
         self.solid_cb = FCCheckBox(label='Solid')
+        self.solid_cb.set_tooltip_markup(
+            "Solid color polygons."
+        )
         grid0.attach(self.solid_cb, 1, 0, 1, 1)
 
         # Multicolored CB
         self.multicolored_cb = FCCheckBox(label='Multicolored')
+        self.multicolored_cb.set_tooltip_markup(
+            "Draw polygons in different colors."
+        )
         grid0.attach(self.multicolored_cb, 2, 0, 1, 1)
 
         ## Isolation Routing
         self.isolation_routing_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.isolation_routing_label.set_markup("<b>Isolation Routing:</b>")
+        self.isolation_routing_label.set_tooltip_markup(
+            "Create a Geometry object with\n"
+            "toolpaths to cut outside polygons."
+        )
         self.custom_box.pack_start(self.isolation_routing_label, expand=True, fill=False, padding=2)
 
         grid = Gtk.Grid(column_spacing=3, row_spacing=2)
         self.custom_box.pack_start(grid, expand=True, fill=False, padding=2)
 
         l1 = Gtk.Label('Tool diam:', xalign=1)
+        l1.set_tooltip_markup(
+            "Diameter of the cutting tool."
+        )
         grid.attach(l1, 0, 0, 1, 1)
         self.iso_tool_dia_entry = LengthEntry()
         grid.attach(self.iso_tool_dia_entry, 1, 0, 1, 1)
 
         l2 = Gtk.Label('Width (# passes):', xalign=1)
+        l2.set_tooltip_markup(
+            "Width of the isolation gap in\n"
+            "number (integer) of tool widths."
+        )
         grid.attach(l2, 0, 1, 1, 1)
         self.iso_width_entry = IntEntry()
         grid.attach(self.iso_width_entry, 1, 1, 1, 1)
 
         l3 = Gtk.Label('Pass overlap:', xalign=1)
+        l3.set_tooltip_markup(
+            "How much (fraction of tool width)\n"
+            "to overlap each pass."
+        )
         grid.attach(l3, 0, 2, 1, 1)
         self.iso_overlap_entry = FloatEntry()
         grid.attach(self.iso_overlap_entry, 1, 2, 1, 1)
 
         self.generate_iso_button = Gtk.Button(label='Generate Geometry')
+        self.generate_iso_button.set_tooltip_markup(
+            "Create the Geometry Object\n"
+            "for isolation routing."
+        )
         self.custom_box.pack_start(self.generate_iso_button, expand=True, fill=False, padding=2)
 
         ## Board cuttout
-        self.isolation_routing_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
-        self.isolation_routing_label.set_markup("<b>Board cutout:</b>")
-        self.custom_box.pack_start(self.isolation_routing_label, expand=True, fill=False, padding=2)
+        self.board_cutout_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
+        self.board_cutout_label.set_markup("<b>Board cutout:</b>")
+        self.board_cutout_label.set_tooltip_markup(
+            "Create toolpaths to cut around\n"
+            "the PCB and separate it from\n"
+            "the original board."
+        )
+        self.custom_box.pack_start(self.board_cutout_label, expand=True, fill=False, padding=2)
 
         grid2 = Gtk.Grid(column_spacing=3, row_spacing=2)
         self.custom_box.pack_start(grid2, expand=True, fill=False, padding=2)
 
         l4 = Gtk.Label('Tool dia:', xalign=1)
+        l4.set_tooltip_markup(
+            "Diameter of the cutting tool."
+        )
         grid2.attach(l4, 0, 0, 1, 1)
         self.cutout_tooldia_entry = LengthEntry()
         grid2.attach(self.cutout_tooldia_entry, 1, 0, 1, 1)
 
         l5 = Gtk.Label('Margin:', xalign=1)
+        l5.set_tooltip_markup(
+            "Distance from objects at which\n"
+            "to draw the cutout."
+        )
         grid2.attach(l5, 0, 1, 1, 1)
         self.cutout_margin_entry = LengthEntry()
         grid2.attach(self.cutout_margin_entry, 1, 1, 1, 1)
 
         l6 = Gtk.Label('Gap size:', xalign=1)
+        l6.set_tooltip_markup(
+            "Size of the gaps in the toolpath\n"
+            "that will remain to hold the\n"
+            "board in place."
+        )
         grid2.attach(l6, 0, 2, 1, 1)
         self.cutout_gap_entry = LengthEntry()
         grid2.attach(self.cutout_gap_entry, 1, 2, 1, 1)
 
         l7 = Gtk.Label('Gaps:', xalign=1)
+        l7.set_tooltip_markup(
+            "Where to place the gaps, Top/Bottom\n"
+            "Left/Rigt, or on all 4 sides."
+        )
         grid2.attach(l7, 0, 3, 1, 1)
         self.gaps_radio = RadioSet([{'label': '2 (T/B)', 'value': 'tb'},
                                     {'label': '2 (L/R)', 'value': 'lr'},
@@ -357,42 +530,85 @@ class GerberObjectUI(ObjectUI):
         grid2.attach(self.gaps_radio, 1, 3, 1, 1)
 
         self.generate_cutout_button = Gtk.Button(label='Generate Geometry')
+        self.generate_cutout_button.set_tooltip_markup(
+            "Generate the geometry for\n"
+            "the board cutout."
+        )
         self.custom_box.pack_start(self.generate_cutout_button, expand=True, fill=False, padding=2)
 
         ## Non-copper regions
         self.noncopper_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.noncopper_label.set_markup("<b>Non-copper regions:</b>")
+        self.noncopper_label.set_tooltip_markup(
+            "Create polygons covering the\n"
+            "areas without copper on the PCB.\n"
+            "Equivalent to the inverse of this\n"
+            "object. Can be used to remove all\n"
+            "copper from a specified region."
+        )
         self.custom_box.pack_start(self.noncopper_label, expand=True, fill=False, padding=2)
 
         grid3 = Gtk.Grid(column_spacing=3, row_spacing=2)
         self.custom_box.pack_start(grid3, expand=True, fill=False, padding=2)
 
         l8 = Gtk.Label('Boundary margin:', xalign=1)
+        l8.set_tooltip_markup(
+            "Specify the edge of the PCB\n"
+            "by drawing a box around all\n"
+            "objects with this minimum\n"
+            "distance."
+        )
         grid3.attach(l8, 0, 0, 1, 1)
         self.noncopper_margin_entry = LengthEntry()
         grid3.attach(self.noncopper_margin_entry, 1, 0, 1, 1)
 
         self.noncopper_rounded_cb = FCCheckBox(label="Rounded corners")
+        self.noncopper_rounded_cb.set_tooltip_markup(
+            "If the boundary of the board\n"
+            "is to have rounded corners\n"
+            "their radius is equal to the margin."
+        )
         grid3.attach(self.noncopper_rounded_cb, 0, 1, 2, 1)
 
         self.generate_noncopper_button = Gtk.Button(label='Generate Geometry')
+        self.generate_noncopper_button.set_tooltip_markup(
+            "Creates a Geometry objects with polygons\n"
+            "covering the copper-free areas of the PCB."
+        )
         self.custom_box.pack_start(self.generate_noncopper_button, expand=True, fill=False, padding=2)
 
         ## Bounding box
         self.boundingbox_label = Gtk.Label(justify=Gtk.Justification.LEFT, xalign=0, margin_top=5)
         self.boundingbox_label.set_markup('<b>Bounding Box:</b>')
+        self.boundingbox_label.set_tooltip_markup(
+            "Create a Geometry object with a rectangle\n"
+            "enclosing all polygons at a given distance."
+        )
         self.custom_box.pack_start(self.boundingbox_label, expand=True, fill=False, padding=2)
 
         grid4 = Gtk.Grid(column_spacing=3, row_spacing=2)
         self.custom_box.pack_start(grid4, expand=True, fill=False, padding=2)
 
         l9 = Gtk.Label('Boundary Margin:', xalign=1)
+        l9.set_tooltip_markup(
+            "Distance of the edges of the box\n"
+            "to the nearest polygon."
+        )
         grid4.attach(l9, 0, 0, 1, 1)
         self.bbmargin_entry = LengthEntry()
         grid4.attach(self.bbmargin_entry, 1, 0, 1, 1)
 
         self.bbrounded_cb = FCCheckBox(label="Rounded corners")
+        self.bbrounded_cb.set_tooltip_markup(
+            "If the bounding box is \n"
+            "to have rounded corners\n"
+            "their radius is equal to\n"
+            "the margin."
+        )
         grid4.attach(self.bbrounded_cb, 0, 1, 2, 1)
 
         self.generate_bb_button = Gtk.Button(label='Generate Geometry')
+        self.generate_bb_button.set_tooltip_markup(
+            "Genrate the Geometry object."
+        )
         self.custom_box.pack_start(self.generate_bb_button, expand=True, fill=False, padding=2)
\ No newline at end of file
diff --git a/camlib.py b/camlib.py
index c9fdef4f..235c9731 100644
--- a/camlib.py
+++ b/camlib.py
@@ -30,7 +30,8 @@ import simplejson as json
 import logging
 
 log = logging.getLogger('base2')
-log.setLevel(logging.DEBUG)
+#log.setLevel(logging.DEBUG)
+log.setLevel(logging.WARNING)
 formatter = logging.Formatter('[%(levelname)s] %(message)s')
 handler = logging.StreamHandler()
 handler.setFormatter(formatter)