-3 6 setyrange
quadrillage
.5 setlinewidth
tracerepere
marks

/A {-4 -1} def
/B {1.5 3} def
/C {4 5} def

<tex>
$\vec \imath $
</tex>
.7 0 [1.5 dup] dltexlabel

<tex>
$\vec \jmath $
</tex>
0 .7  [1.5 dup] dltexlabel


setTimesItalic
   (O) O dltext