Using the Ace editor
Ace is the code editor embedded within Lectora Online. It provides the features and performance of today's native editors, such as syntax highlighting for over a hundred languages, selecting from several themes, code folding, an API, and much more. Refer to this section for tips to improve your experience using Ace.
For more information about working with the Ace editor, visit https://ace.c9.io/#nav=about.
Ace provides the following keyboard shortcuts to streamline the coding process.
Default keyboard shortcuts
Refer to the following default keyboard shortcuts when using Ace.
Line operations
| Action |
Windows/Linux |
Mac |
| Remove line |
Ctrl-D |
Command-D |
| Copy lines down |
Alt-Shift-Down |
Command-Option-Down |
| Copy lines up |
Alt-Shift-Up |
Command-Option-Up |
| Move lines down |
Alt-Down |
Option-Down |
| Move lines up |
Alt-Up |
Option-Up |
| Remove to line end |
Alt-Delete |
Ctrl-K |
| Remove to linestart |
Alt-Backspace |
Command-Backspace |
| Remove word left |
Ctrl-Backspace |
Option-Backspace, Ctrl-Option-Backspace |
| Remove word right |
Ctrl-Delete |
Option-Delete |
| Split line |
--- |
Ctrl-O |
Selection
| Action |
Windows/Linux |
Mac |
| Select all |
Ctrl-A |
Command-A |
| Select left |
Shift-Left |
Shift-Left |
| Select right |
Shift-Right |
Shift-Right |
| Select word left |
Ctrl-Shift-Left |
Option-Shift-Left |
| Select word right |
Ctrl-Shift-Right |
Option-Shift-Right |
| Select line start |
Shift-Home |
Shift-Home |
| Select line end |
Shift-End |
Shift-End |
| Select to line end |
Alt-Shift-Right |
Command-Shift-Right |
| Select to line start |
Alt-Shift-Left |
Command-Shift-Left |
| Select up |
Shift-Up |
Shift-Up |
| Select down |
Shift-Down |
Shift-Down |
| Select page up |
Shift-PageUp |
Shift-PageUp |
| Select page down |
Shift-PageDown |
Shift-PageDown |
| Select to start |
Ctrl-Shift-Home |
Command-Shift-Up |
| Select to end |
Ctrl-Shift-End |
Command-Shift-Down |
| Duplicate selection |
Ctrl-Shift-D |
Command-Shift-D |
| Select to matching bracket |
Ctrl-Shift-P |
--- |
Multicursor
| Action |
Windows/Linux |
Mac |
| Add multi-cursor above |
Ctrl-Alt-Up |
Ctrl-Option-Up |
| Add multi-cursor below |
Ctrl-Alt-Down |
Ctrl-Option-Down |
| Add next occurrence to multi-selection |
Ctrl-Alt-Right |
Ctrl-Option-Right |
| Add previous occurrence to multi-selection |
Ctrl-Alt-Left |
Ctrl-Option-Left |
| Move multicursor from current line to the line above |
Ctrl-Alt-Shift-Up |
Ctrl-Option-Shift-Up |
| Move multicursor from current line to the line below |
Ctrl-Alt-Shift-Down |
Ctrl-Option-Shift-Down |
| Remove current occurrence from multi-selection and move to next |
Ctrl-Alt-Shift-Right |
Ctrl-Option-Shift-Right |
| Remove current occurrence from multi-selection and move to previous |
Ctrl-Alt-Shift-Left |
Ctrl-Option-Shift-Left |
| Select all from multi-selection |
Ctrl-Shift-L |
Ctrl-Shift-L |
Go to
| Action |
Windows/Linux |
Mac |
| Go to left |
Left |
Left, Ctrl-B |
| Go to right |
Right |
Right, Ctrl-F |
| Go to word left |
Ctrl-Left |
Option-Left |
| Go to word right |
Ctrl-Right |
Option-Right |
| Go line up |
Up |
Up, Ctrl-P |
| Go line down |
Down |
Down, Ctrl-N |
| Go to line start |
Alt-Left, Home |
Command-Left, Home, Ctrl-A |
| Go to line end |
Alt-Right, End |
Command-Right, End, Ctrl-E |
| Go to page up |
PageUp |
Option-PageUp |
| Go to page down |
PageDown |
Option-PageDown, Ctrl-V |
| Go to start |
Ctrl-Home |
Command-Home, Command-Up |
| Go to end |
Ctrl-End |
Command-End, Command-Down |
| Go to line |
Ctrl-L |
Command-L |
| Scroll line down |
Ctrl-Down |
Command-Down |
| Scroll line up |
Ctrl-Up |
--- |
| Go to matching bracket |
Ctrl-P |
--- |
| Scroll page down |
--- |
Option-PageDown |
| Scroll page up |
--- |
Option-PageUp |
Find/Replace
| Action |
Windows/Linux |
Mac |
| Find |
Ctrl-F |
Command-F |
| Replace |
Ctrl-H |
Command-Option-F |
| Find next |
Ctrl-K |
Command-G |
| Find previous |
Ctrl-Shift-K |
Command-Shift-G |
Folding
| Action |
Windows/Linux |
Mac |
| Fold selection |
Alt-L, Ctrl-F1 |
Command-Option-L, Command-F1 |
| Unfold |
Alt-Shift-L, Ctrl-Shift-F1 |
Command-Option-Shift-L, Command-Shift-F1 |
| Fold all |
Alt-0 |
Command-Option-0 |
| Unfold all |
Alt-Shift-0 |
Command-Option-Shift-0 |
Other
| Action |
Windows/Linux |
Mac |
| Indent |
Tab |
Tab |
| Outdent |
Shift-Tab |
Shift-Tab |
| Undo |
Ctrl-Z |
Command-Z |
| Redo |
Ctrl-Shift-Z, Ctrl-Y |
Command-Shift-Z, Command-Y |
| Show the settings menu |
Ctrl-, |
Command-, |
| Toggle comment |
Ctrl-/ |
Command-/ |
| Transpose letters |
Ctrl-T |
Ctrl-T |
| Enter full screen |
Ctrl-Enter |
Command-Enter |
| Change to lower case |
Ctrl-Shift-U |
Ctrl-Shift-U |
| Change to upper case |
Ctrl-U |
Ctrl-U |
| Overwrite |
Insert |
Insert |
| Macros replay |
Ctrl-Shift-E |
Command-Shift-E |
| Macros recording |
Ctrl-Alt-E |
--- |
| Delete |
Delete |
--- |
| Center selection |
--- |
Ctrl-L |
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