mingw/info/gdb/Introduction-and-Notation.html

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  12 Node:<a name="Introduction%20and%20Notation">Introduction and Notation</a>,
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  18 <h3 class="section">Introduction to Line Editing</h3>
  19
  20    <p>The following paragraphs describe the notation used to represent
  21 keystrokes.
  22
  23    <p>The text <kbd>C-k</kbd> is read as `Control-K' and describes the character
  24 produced when the &lt;k&gt; key is pressed while the Control key
  25 is depressed.
  26
  27    <p>The text <kbd>M-k</kbd> is read as `Meta-K' and describes the character
  28 produced when the Meta key (if you have one) is depressed, and the &lt;k&gt;
  29 key is pressed.
  30 The Meta key is labeled &lt;ALT&gt; on many keyboards.
  31 On keyboards with two keys labeled &lt;ALT&gt; (usually to either side of
  32 the space bar), the &lt;ALT&gt; on the left side is generally set to
  33 work as a Meta key.
  34 The &lt;ALT&gt; key on the right may also be configured to work as a
  35 Meta key or may be configured as some other modifier, such as a
  36 Compose key for typing accented characters.
  37
  38    <p>If you do not have a Meta or &lt;ALT&gt; key, or another key working as
  39 a Meta key, the identical keystroke can be generated by typing &lt;ESC&gt;
  40 <em>first</em>, and then typing &lt;k&gt;.
  41 Either process is known as <dfn>metafying</dfn> the &lt;k&gt; key.
  42
  43    <p>The text <kbd>M-C-k</kbd> is read as `Meta-Control-k' and describes the
  44 character produced by <dfn>metafying</dfn> <kbd>C-k</kbd>.
  45
  46    <p>In addition, several keys have their own names.  Specifically,
  47 &lt;DEL&gt;, &lt;ESC&gt;, &lt;LFD&gt;, &lt;SPC&gt;, &lt;RET&gt;, and &lt;TAB&gt; all
  48 stand for themselves when seen in this text, or in an init file
  49 (see <a href="Readline-Init-File.html#Readline%20Init%20File">Readline Init File</a>).
  50 If your keyboard lacks a &lt;LFD&gt; key, typing &lt;C-j&gt; will
  51 produce the desired character.
  52 The &lt;RET&gt; key may be labeled &lt;Return&gt; or &lt;Enter&gt; on
  53 some keyboards.
  54
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