Iran System encoding
Iran System encoding was an 8-bit character encoding scheme and was created by Iran System corporation for Persian language support. This encoding was in use in Iran in DOS-based programs and after the introduction of Microsoft code page 1256 this encoding became obsolete. However, some Windows and DOS programs using this encoding are still in use and some Windows fonts with this encoding exist. Now most programs use code page 1256 or Unicode.Only the upper half of the table is shown, the lower half being plain ASCII. This character set encodes distinct visual forms separately.