- DOS function 3Bh - Change Directory</A></FONT><BR>
  <FONT SIZE=-1 FACE="Verdana, Arial, Helvetica"><A HREF="prog/int21h/3c.htm">3.14 - DOS function 3Ch - Create File</A></FONT><BR>
  <FONT SIZE=-1 FACE="Verdana, Arial, Helvetica"><A HREF="prog/int21h/3d.htm">3.15 - DOS function 3Dh - Open File</A></FONT><BR>
  <FONT SIZE=-1 FACE="Verdana, Arial, Helvetica"><A HREF="prog/int21h/3f.htm">3.16 - DOS function 3Fh - Read from File</A></FONT><BR>
  <FONT SIZE=-1 FACE="Verdana, Arial, Helvetica"><A HREF="pro