The routine finds the projection Q of point P on line l.

For a detailed description of the point to be created Q, use the routine detail (e.g., detail(Q))

The command with(geometry,projection) allows the use of the abbreviated form of this command.

$\mathrm{with}\left(\mathrm{geometry}\right)\:$

$\mathrm{point}\left(P\,2\,3\right),\mathrm{line}\left(l\,m+n=1\,\left[m\,n\right]\right)$

$P,l$

$\mathrm{projection}\left(Q\,P\,l\right)$

$Q$

$\mathrm{form}\left(Q\right)$

$\mathrm{point2d}$

$\mathrm{coordinates}\left(Q\right)$

$\left[0\,1\right]$