<pclass="narrative">Page 1 is the title page. This is where the plotter plot a simple dot. At the same time one person enters the grid, marking a dot in by telling the coordonates and giving an introduction. This moment marks the direct echo between the bodies and the machine. Space and language are transposed to the scale of the body.</p>

<pclass="narrative">Page 2 draws a same line following the 3 langages in action : hpgl, Logo and Metapost. Alternately the body is the pen, the instructor and the interpreter. </p>

<pclass="narrative"> Page 3. The team gathers to fill boxes of the grid with chalk. Now the full body is a pen carried by a body that plays the arm of the plotter. The hpgl plot of an angle appears in negative in the white space of the chalk.</p>

<!-- Hm, here on the page appear a text about Logo but the corner instructions are in hpgl. -->

<pclass="documentation">

Logo a été écrit pour les enfants. Né en 1966, c'est une méthode pédagogique et un langage de programmation qui la met en

pratique. Inspirée des recherches de Jean Piaget, Logo a été développé par Seymour Papert comme une initiation à

<pclass="narrative"> Page 4 deals with curves and the simplest application of them : circles. Three circles are performed simultaneously starting as a canon and continuing in a loop. Each body performs the circle in a different posture and rhythm. The 3 languages come into confrontation, bodies have here to take into account collisions. Riding on the wall the Metapost circle meets the three-dimensional space of the stage. The path bumps into the folds of the page.</p>

HPGL or Hewlett-Packard Graphics Language, is a drawing and programming language to command pen plotters. It developed into

<pclass="documentation">

HPGL or Hewlett-Packard Graphicclass="narrative"s Language, is a drawing and programming language to command pen plotters. It developed into

the industry standard and is still supported by contemporary devices. There are commands to send the pen to a coordinate,

or position on the paper and commands to put the pen down on the paper: Pen Down, or to lift it again: Pen Up. If

the pen is moving while it is down or on the paper the machine draws. There are commands to modify the pen and commands

<pclass="narrative">Page 5 is the link with a more theoretical passage on the origin of our Latin ductus. The plotter superimposes the evolution of the lines of the ampersand sign - from the capitales ET to the & - by following Jean Mallon's documentary <i>Ductus</i>.</p>

<pclass="narrative"> We then retrace the historical relationships between E and ה.

<pclass="narrative">Page 6 tells the specificities of the letter and bring us back to curves. Starting from a minimal straight plotted version of the ה and the 3 points defining its upper right part, we play with curve tensions variations, making legible the self initiative behaviour of Metapost dealing with curves. A dialogue between the indications of Adva - only practitioner drawing this sign - the instructions and the projected drawing of Metapost is played out.</p>

<pclass="documentation">

Linguists say that the E, fifth letter of the latin alphabet, is derived from the Greek Epsilon E, represented in egyptian

hieroglyph by the rotated , and rotated again from the Phoenician that is rooted in two cuneiform letters from the

semitic script aged from more than three millenaries, the fifth letter haw meaning the window and the eight letter

heth meaning fence . In syriac and arabic, it gave a near rounded shape, and in hebrew the mix between the latinesque

cornered letter and a rounded one, even more rounded in cursive .</p>

<pclass="narrative"> Page 7 introduces the Metafont "most pleasing curve" concept. That's when the programmer becomes a choreographer and program itself is the 'dancer'. The plotter plot the ה with the rounded angle without direction, and on top of it, with direction (intention).

</p>

<pclass="documentation">

Metapost is a drawing language based on Metafont, the language developed by Donald Knuth to design fonts. In Metapost the

drawing is deduced from a collection of mathematical equations. It is not obligatory but often the drawing is split

...

...

@@ -225,8 +238,8 @@ end

closed curve that goes through them in the specified order [...] To avoid degenerate situations we may assume that

n is at least 4. This problem is essentially like the dot-to-dot puzzles that we give to young children. Of course

it is not a well-posed mathematical problem, since I didn't say what it means for a curve to be "most pleasing".

Let's first postulate some axioms that the most pleasing curve should satisfy. [... skipping mathematical properties

1 to 4 ...] Property 5 (smoothness) : There are no sharp corners in the most pleasing curve. [...] In other words,

Let's first postulate soractice of the drawing of this sign,me axioms that the most pleasing curve should satisfy. [... skipping mathematical properties

1 to 4 ...] Property 5 (smoothness) : There are nothe hpgl plot of an angle appears in negative in the white space of the chalk. sharp corners in the most pleasing curve. [...] In other words,

there is a unique tangent at every point of the curve. Property 6 : if z1, z2, z3, z4 are consecutive points of a

circle, the most pleasing curve through them is that circle.» Donald Knuth, "Mathematical typography", p. 355, in

the Bulletin of the American Mathematical Society, Volume 1, Number 2, March 1979

<p>Drawing of the grid is the first element of the presentation. Developed as a group the scene start as the audience is still coming in.

Equiped with different coloured technical tapes, each one coordinates in solo or binomial to place the different markers.

<pclass="narrative">Drawing of the grid is the first element of the presentation. Developed as a group the scene start as the audience is still coming in.

Equiped with different coloured technical tapes, each one cthe hpgl plot of an angle appears in negative in the white space of the chalk.oordinates in solo or binomial to place the different markers.

The installation of the tape uses walking techniques inspired by the performance of Esther Ferrer or measured movements, rolled developed for the occasion.

In the background we listen to Laurie Anderson - O Superman.</p>

<p>The grid has a proportion of 8 x 4 and allows us to overflow on the wall.</p>

<p>After placement of the grid by the bodies, light focus on the plotter who starts 'marking the territory'.

<pclass="narrative">The grid has a proportion of 8 x 4 and allows us to overflow on the wall.</p>

<pclass="narrative">After placement of the grid by the bodies, light focus on the plotter who starts 'marking the territory'.

One's filming next to it so that the audience can see the pen trajectory, plotter's dance projected on the side wall.

On page 8, the grid is drawn.</p>

the hpgl plot of an angle appears in negative in the white space of the chalk.