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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <HTML> <HEAD> <META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9"> <TITLE>The Linux keyboard and console HOWTO: Some properties of the VT100 - application key mode</TITLE> <LINK HREF="kbd.FAQ-22.html" REL=next> <LINK HREF="kbd.FAQ-20.html" REL=previous> <LINK HREF="kbd.FAQ.html#toc21" REL=contents> </HEAD> <BODY> <A HREF="kbd.FAQ-22.html">Next</A> <A HREF="kbd.FAQ-20.html">Previous</A> <A HREF="kbd.FAQ.html#toc21">Contents</A> <HR> <H2><A NAME="s21">21. Some properties of the VT100 - application key mode</A></H2> <P> <!-- keyboard!VT100 application key mode --> <!-- VT100 application key mode --> <P>: Sometimes my cursor keys or keypad keys produce strange codes? <P>When the terminal is in application cursor key mode the cursor keys produce Esc O x and otherwise Esc [ x where x is one of A,B,C,D. Certain programs put the terminal in application cursor key mode; if you kill them with <CODE>kill -9</CODE>, or if they crash, then the mode will not be reset. <PRE> % echo -e '\033c' </PRE> resets all properties of the current VC. Just changing the cursor application key mode is done by <PRE> % echo -e '\033[?1h' </PRE> (set) and <PRE> % echo -e '\033[?1l' </PRE> (clear). <P>When the terminal is in application keypad key mode the keypad keys produce Esc O y and otherwise Esc [ z ~ for certain y and z. Setting application keypad key mode is done by <PRE> % echo -e '\033=' </PRE> and <PRE> % echo -e '\033>' </PRE> clears it again. <P> <HR> <A HREF="kbd.FAQ-22.html">Next</A> <A HREF="kbd.FAQ-20.html">Previous</A> <A HREF="kbd.FAQ.html#toc21">Contents</A> </BODY> </HTML>
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