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<TABLE ID="T3-10">
<CAPTION>Table 3-10 Control Characters</CAPTION>
<THEAD>
<TR VALIGN="BOTTOM">
<TH>Control Character</TH>
<TH>Octal Code</TH>
<TH>Action Taken</TH>
</TR>
</THEAD>
<TBODY>
<TR VALIGN="TOP">
<TD>NUL</TD>
<TD>000</TD>
<TD>Ignored on input (not stored in input buffer; see full duplex protocol).</TD>
</TR>
<TR VALIGN="TOP">
<TD>ENQ</TD>
<TD>005</TD>
<TD>Transmit answerback message.</TD>
</TR>
<TR VALIGN="TOP">
<TD>BEL</TD>
<TD>007</TD>
<TD>Sound bell tone from keyboard.</TD>
</TR>
<TR VALIGN="TOP">
<TD>BS</TD>
<TD>010</TD>
<TD>Move the cursor to the left one character position, unless it is at the
left margin, in which case no action occurs.</TD>
</TR>
<TR VALIGN="TOP">
<TD>HT</TD>
<TD>011</TD>
<TD>Move the cursor to the next tab stop, or to the right margin if no
further tab stops are present on the line.</TD>
</TR>
<TR VALIGN="TOP">
<TD>LF</TD>
<TD>012</TD>
<TD>This code causes a line feed or a new line operation. (See new line
mode).</TD>
</TR>
<TR VALIGN="TOP">
<TD>VT</TD>
<TD>013</TD>
<TD>Interpreted as LF.</TD>
</TR>
<TR VALIGN="TOP">
<TD>FF</TD>
<TD>014</TD>
<TD>Interpreted as LF.</TD>
</TR>
<TR VALIGN="TOP">
<TD>CR</TD>
<TD>015</TD>
<TD>Move cursor to the left margin on the current line.</TD>
</TR>
<TR VALIGN="TOP">
<TD>SO</TD>
<TD>016</TD>
<TD>Invoke G1 character set, as designated by SCS control sequence.</TD>
</TR>
<TR VALIGN="TOP">
<TD>SI</TD>
<TD>017</TD>
<TD>Select G0 character set, as selected by ESC ( sequence.</TD>
</TR>
<TR VALIGN="TOP">
<TD>XON</TD>
<TD>021</TD>
<TD>Causes terminal to resume transmission.</TD>
</TR>
<TR VALIGN="TOP">
<TD>XOFF</TD>
<TD>023</TD>
<TD>Causes terminal to stop transmitted all codes except XOFF and XON.</TD>
</TR>
<TR VALIGN="TOP">
<TD>CAN</TD>
<TD>030</TD>
<TD>If sent during a control sequence, the sequence is immediately terminated
and not executed. It also causes the error character to be displayed.</TD>
</TR>
<TR VALIGN="TOP">
<TD>SUB</TD>
<TD>032</TD>
<TD>Interpreted as CAN.</TD>
</TR>
<TR VALIGN="TOP">
<TD>ESC</TD>
<TD>033</TD>
<TD>Invokes a control sequence.</TD>
</TR>
<TR VALIGN="TOP">
<TD>DEL</TD>
<TD>177</TD>
<TD>Ignored on input (not stored in input buffer).</TD>
</TR>
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