 | Appendix A Quick Reference |  |
| Appendix A Quick Reference | |
| Abbreviations[1] | |
:map x sequence | Define keystroke x as a command sequence |
:map! x sequence | Define x as command sequence for insert mode |
:unmap x | Disable the map x |
:unmap! x | Disable insert mode map x |
:ababbr
phrase | Abbreviate phrase as abbr; when abbr is typed in insert mode, it expands to full words or phrases |
:unab abbr | Disable abbreviation |
| Customizing environment: [1] | |
:set option | Activate option |
:set option=value | Assign value to option |
:set nooption | Deactivate option |
:set | Display options set by user |
:set all | Display list of all current options, both default and those set by the user |
:set option? | Display value of option |
: | Invoke ex from vi editor |
:vi | Invoke vi editor from ex |
:sh | Invoke shell |
^D | Return to editor from shell |
:! command | Give UNIX command |
:r newfile | Read contents of newfile into current file |
:r !command | Read output of UNIX command into current file |
[1] In .exrc files, omit colon at the start of ex commands.
|  | |
| A.4 Command Line Options |  | B. Setting Environment Options |
