Throughout all tournament of Roland Garros in 2005
a drawing illustrated, each day, a text explaining a point of the rules.

Questions of lines
The lines which delimit the tennis court are not all
of the same dimension. Broadest is the basic line of short,,
which can measure up to 10,16 cm. The line of centers of the service
must measure 5,08 cm and the other lines between 2,54 and 5,08 cm.
The lines can be painted, as in Roland-Garros, stuck or
nailed on the ground. In addition, the payment does not stipulate
that these lines have as an obligation to be white: “All the lines
must be of a uniform color which slices clearly on the color
of the surface of the ground”. With when the yellow line
not to be crossed ?