Terms containing writing with a pen

Subject	English	Russian
Makarov.	make thick and thin lines when writing with a pen	писать с нажимом (при письме пером)
math.	write a letter with a pen	писать письмо ручкой
gen.	write with a pen	писать пером
Makarov.	write with a pen	писать ручкой
gen.	write with a pen	писать ручкой (in pencil, with a ball-point pen, with ink, with chalk, etc., и т.д.)
gen.	write with a strange fountain-pen	писать чужой авторучкой