Izvi zvinotevera zvinokupa hwaro hwakasimba kuti uenderere mberi nekufunda misimboti miviri yakakosha yeP & F charting: nhanho dzekutsigira uye nematanho ekudzivirira. Iwe unofanirwa kuyeuka kuti zvese rutsigiro uye kuramba zvinoratidzwa mumitsara yakatwasuka uye zvitaera zvinomiririrwa ne45-degree angles. Matanho Ekutsigira Chikamu…