draw lines of table
etabgrid(colsXW,rowsYH)
colsXW :
matrix of x-positions and width of columns,
size of matrix is (number of cols) X 2
examples: cellXW(5,1) = x-position of colum 5
cellXW(5,2) = width of colum 5
rowsYH :
matrix of y-positions and heigth of rows,
size of matrix is (number of rows) X 2
examples: cellXW(5,1) = y-position of row 5
cellXW(5,2) = height of row 5