message: Part of the doc disappeared during the homogenization...
diff: @@ -8,9 +8,12 @@ This program computes the persistent homology with coefficient field Z/pZ of the
  where `dim` is the dimension of the homological feature, `b` and `d` are respectively the birth and death of the feature, and `p` is the characteristic of the field *Z/pZ* used for homology coefficients (`p` must be a prime number).
  **Usage**
  -`alpha_complex_3d_persistence [options] <OFF input file>`
  +`alpha_complex_3d_persistence [options] <input OFF file>`
  +where
  +`<input OFF file>` is the path to the input point cloud in OFF format.
  **Allowed options**
  +
  * `-h [ --help ]` Produce help message
  * `-o [ --output-file ]` Name of file in which the persistence diagram is written. Default print in standard output.
  * `-p [ --field-charac ]` (default=11) Characteristic p of the coefficient field Z/pZ for computing homology.
  @@ -50,9 +53,13 @@ Same as `alpha_complex_3d_persistence`, but using exact computation. It is slowe
  Same as `alpha_complex_3d_persistence`, but using weighted points.
  **Usage**
  -`weighted_alpha_complex_3d_persistence [options] <OFF input file> <weights input file>`
  +`weighted_alpha_complex_3d_persistence [options] <input OFF file> <weights input file>`
  +where
  +`<input OFF file>` is the path to the input point cloud in OFF format.
  +`<input weights file>` is the path to the file containing the weights of the points (one value per line).
  **Allowed options**
  +
  * `-h [ --help ]` Produce help message
  * `-o [ --output-file ]` Name of file in which the persistence diagram is written. Default print in standard output.
  * `-p [ --field-charac ]` (default=11) Characteristic p of the coefficient field Z/pZ for computing homology.
  @@ -80,17 +87,13 @@ and [Regular triangulation](https://doc.cgal.org/latest/Triangulation_3/index.ht
  Same as `alpha_complex_3d_persistence`, but using periodic alpha shape 3d.
  **Usage**
  -`periodic_alpha_complex_3d_persistence <input OFF file> <cuboid file> <p> <min_persistence>`
  +`periodic_alpha_complex_3d_persistence [options] <input OFF file> <cuboid file>`
  where
  `<input OFF file>` is the path to the input point cloud in OFF format.
  `<cuboid file>` is the path to the file describing the periodic domain. It must be in the format described [here](http://gudhi.gforge.inria.fr/doc/latest/fileformats.html#FileFormatsIsoCuboid).
  -`<p>` is the characteristic p of the coefficient field *Z/pZ* for computing homology. It must be a stricly positive integer.
  -`<min_persistence>` is the minimal lifetime of homology feature to be recorded. Enter a negative value to see zero length intervals.
  -
  -**Usage**
  -`./periodic_alpha_complex_3d_persistence [options] input-file cuboid-file`
  **Allowed options**
  +
  * `-h [ --help ]` Produce help message
  * `-o [ --output-file ]` Name of file in which the persistence diagram is written. Default print in standard output.
  * `-p [ --field-charac ]` (default=11) Characteristic p of the coefficient field Z/pZ for computing homology.
  @@ -137,7 +140,9 @@ This program computes the persistent homology with coefficient field Z/pZ of the
  where `dim` is the dimension of the homological feature, `b` and `d` are respectively the birth and death of the feature, and `p` is the characteristic of the field *Z/pZ* used for homology coefficients (`p` must be a prime number).
  **Usage**
  -`alpha_complex_persistence [options] <OFF input file>`
  +`alpha_complex_persistence [options] <input OFF file>`
  +where
  +`<input OFF file>` is the path to the input point cloud in OFF format.
  **Allowed options**
  