diff -r eb3c7813b67a -r d4fd5f32d10e src/fb.rs
--- a/src/fb.rs	Thu Dec 01 23:07:35 2022 +0200
+++ b/src/fb.rs	Wed Nov 30 23:45:04 2022 +0200
@@ -84,6 +84,7 @@
 use serde::{Serialize, Deserialize};
 use colored::Colorize;
 use nalgebra::DVector;
+use clap::Parser;
 
 use alg_tools::iterate::{
     AlgIteratorFactory,
@@ -146,6 +147,11 @@
     Zero,
 }
 
+impl Default for InsertionStyle {
+    fn default() -> Self {
+        Self::Reuse
+    }
+}
 /// Meta-algorithm type
 #[derive(Clone, Copy, Eq, PartialEq, Serialize, Deserialize, Debug)]
 #[allow(dead_code)]
@@ -166,10 +172,16 @@
     AfterNth{ n : usize, factor : F },
 }
 
+impl<F : ClapFloat> Default for ErgodicTolerance<F> {
+    fn default() -> Self {
+        Self::NonErgodic
+    }
+}
+
 /// Settings for [`pointsource_fb`].
 #[derive(Clone, Copy, Eq, PartialEq, Serialize, Deserialize, Debug)]
 #[serde(default)]
-pub struct FBConfig<F : Float> {
+pub struct FBConfig<F : ClapFloat> {
     /// Step length scaling
     pub τ0 : F,
     /// Meta-algorithm to apply
@@ -180,24 +192,29 @@
 
 /// Settings for the solution of the stepwise optimality condition in algorithms based on
 /// [`generic_pointsource_fb`].
-#[derive(Clone, Copy, Eq, PartialEq, Serialize, Deserialize, Debug)]
+#[derive(Clone, Copy, Eq, PartialEq, Serialize, Deserialize, Debug, Parser)]
 #[serde(default)]
-pub struct FBGenericConfig<F : Float> {
+pub struct FBGenericConfig<F : ClapFloat> {
+    #[clap(skip)]
     /// Method for constructing $μ$ on each iteration; see [`InsertionStyle`].
     pub insertion_style : InsertionStyle,
+    #[clap(skip)]
     /// Tolerance for point insertion.
     pub tolerance : Tolerance<F>,
     /// Stop looking for predual maximum (where to isert a new point) below
     /// `tolerance` multiplied by this factor.
     pub insertion_cutoff_factor : F,
+    #[clap(skip)]
     /// Apply tolerance ergodically
     pub ergodic_tolerance : ErgodicTolerance<F>,
+    #[clap(skip)]
     /// Settings for branch and bound refinement when looking for predual maxima
     pub refinement : RefinementSettings<F>,
     /// Maximum insertions within each outer iteration
     pub max_insertions : usize,
     /// Pair `(n, m)` for maximum insertions `m` on first `n` iterations.
     pub bootstrap_insertions : Option<(usize, usize)>,
+    #[clap(skip)]
     /// Inner method settings
     pub inner : InnerSettings<F>,
     /// Spike merging method
@@ -213,7 +230,7 @@
 }
 
 #[replace_float_literals(F::cast_from(literal))]
-impl<F : Float> Default for FBConfig<F> {
+impl<F : ClapFloat> Default for FBConfig<F> {
     fn default() -> Self {
         FBConfig {
             τ0 : 0.99,
@@ -224,7 +241,7 @@
 }
 
 #[replace_float_literals(F::cast_from(literal))]
-impl<F : Float> Default for FBGenericConfig<F> {
+impl<F : ClapFloat> Default for FBGenericConfig<F> {
     fn default() -> Self {
         FBGenericConfig {
             insertion_style : InsertionStyle::Reuse,
@@ -457,7 +474,7 @@
     iterator : I,
     plotter : SeqPlotter<F, N>
 ) -> DiscreteMeasure<Loc<F, N>, F>
-where F : Float + ToNalgebraRealField,
+where F : ClapFloat + ToNalgebraRealField,
       I : AlgIteratorFactory<IterInfo<F, N>>,
       for<'b> &'b A::Observable : std::ops::Neg<Output=A::Observable>,
                                   //+ std::ops::Mul<F, Output=A::Observable>,  <-- FIXME: compiler overflow
@@ -521,7 +538,7 @@
     mut residual : A::Observable,
     mut specialisation : Spec,
 ) -> DiscreteMeasure<Loc<F, N>, F>
-where F : Float + ToNalgebraRealField,
+where F : ClapFloat + ToNalgebraRealField,
       I : AlgIteratorFactory<IterInfo<F, N>>,
       Spec : FBSpecialisation<F, A::Observable, N>,
       A::Observable : std::ops::MulAssign<F>,