<fxlayout>
  <page name="Flow Paint Brush Iwa">
  <separator label="Tip Placement"/>
    <control>h_density</control>
    <control>v_density</control>
    <control>pos_randomness</control>
    <control>pos_wobble</control>
  <separator label="Source Area"/>
    <control>origin_pos</control>
    <control>horizontal_pos</control>
    <control>vertical_pos</control>
    <control>curve_point</control>
    <control>fill_gap_size</control>
  <separator label="Brush Tip Geometry"/>
    <control>tip_width</control>
    <control>width_randomness</control>
    <control>sustain_width_to_skew</control>
    <control>tip_length</control>
    <control>length_randomness</control>
    <control>angle_randomness</control>
    <control>tip_alpha</control>
    <control>tip_joints</control>
    <control>bidirectional</control>
    <control>anti_jaggy</control>
  <separator label="Reference Frame"/>
    <control>reference_frame</control decimals="0">
    <control>reference_prevalence</control>
  <separator/>
    <control>random_seed</control>
    <control>sort_by</control>
  </page>
</fxlayout>