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| <h3 class="section">31.1 Introduction to Line Editing</h3> |
| |
| <p>The following paragraphs describe the notation used to represent |
| keystrokes. |
| |
| <p>The text <kbd>C-k</kbd> is read as `Control-K' and describes the character |
| produced when the <k> key is pressed while the Control key |
| is depressed. |
| |
| <p>The text <kbd>M-k</kbd> is read as `Meta-K' and describes the character |
| produced when the Meta key (if you have one) is depressed, and the <k> |
| key is pressed. |
| The Meta key is labeled <ALT> on many keyboards. |
| On keyboards with two keys labeled <ALT> (usually to either side of |
| the space bar), the <ALT> on the left side is generally set to |
| work as a Meta key. |
| The <ALT> key on the right may also be configured to work as a |
| Meta key or may be configured as some other modifier, such as a |
| Compose key for typing accented characters. |
| |
| <p>If you do not have a Meta or <ALT> key, or another key working as |
| a Meta key, the identical keystroke can be generated by typing <ESC> |
| <em>first</em>, and then typing <k>. |
| Either process is known as <dfn>metafying</dfn> the <k> key. |
| |
| <p>The text <kbd>M-C-k</kbd> is read as `Meta-Control-k' and describes the |
| character produced by <dfn>metafying</dfn> <kbd>C-k</kbd>. |
| |
| <p>In addition, several keys have their own names. Specifically, |
| <DEL>, <ESC>, <LFD>, <SPC>, <RET>, and <TAB> all |
| stand for themselves when seen in this text, or in an init file |
| (see <a href="Readline-Init-File.html#Readline-Init-File">Readline Init File</a>). |
| If your keyboard lacks a <LFD> key, typing <C-j> will |
| produce the desired character. |
| The <RET> key may be labeled <Return> or <Enter> on |
| some keyboards. |
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