Keyboard and mouse shortcuts

LinceCAD uses AutoCAD's keys and mouse gestures. The keyboard always goes to the command line: you do not need to click it before typing a command.

Function keys

Key	Function
F1	Help
F2	Text window with the full command line history
F3	Object snaps (OSNAP)
F5	Next isometric plane, with isometric drafting (ISODRAFT)
F7	Grid (not available yet: the grid is always shown)
F8	Ortho mode (ORTHO)
F9	Snap the cursor to the grid (SNAP)
F10	Polar tracking (POLAR)
F11	Object snap tracking (OTRACK)
F12	Dynamic input (DYN)

Command shortcuts

Shortcuts assigned to commands in the program's command registry:

Shortcut	Command	Function
Ctrl+1	PROPERTIES	Properties
Ctrl+A	AI_SELALL	Select All
Ctrl+C	COPYCLIP	Copy Clip
Ctrl+N	NEW	New
Ctrl+O	OPEN	Open
Ctrl+P	PLOT	Plot
Ctrl+Q	QUIT	Exit
Ctrl+S	QSAVE	Save
Ctrl+Shift+C	COPYBASE	Copy with Base Point
Ctrl+Shift+S	SAVEAS	Save As
Ctrl+Shift+V	PASTEBLOCK	Paste as Block
Ctrl+V	PASTECLIP	Paste
Ctrl+X	CUTCLIP	Cut
Ctrl+Y	REDO	Redo
Ctrl+Z	UNDO	Undo
Del	ERASE	Erase
F1	HELP	Help
F10	POLAR	POLAR
F3	OSNAP	OSNAP
F7	GRID	GRID
F8	ORTHO	ORTHO
F9	SNAP	SNAP

Other combinations

Keys	Function
Ctrl+Shift+A	Turns whole-group selection on or off (PICKSTYLE)
Ctrl+E	Next isometric plane, like F5
Ctrl+Tab / Ctrl+Shift+Tab	Next or previous open drawing

Editing keys

Key	Function
Enter or Space	Sends what you typed or ends the selection; on an empty line, repeats the last command
Esc	Cancels the running command (or grip editing); a second Esc clears the selection
Delete	Erases the selection, with no command running
Tab	Completes the suggested command name; in dynamic input, locks the value and moves to the other field; in a table, moves to the next cell
Arrow keys	Choose among the autocomplete suggestions; in a table, move between cells
Shift while selecting	Removes objects from the selection instead of adding them

Space does not send while you are typing text (TEXT, MTEXT, names) or inside an AutoLISP expression that starts with (: in those cases, only Enter does.

Mouse

Action	Function
Click	Specifies a point or selects an object
Drag right / left	Window / crossing selection
Click a grip	Makes it hot to stretch, move, rotate, scale or mirror
Double-click an object	Opens its editor (text, hatch, attributes, block, cell) or the Properties palette
Right-click	Shortcut menu: Enter, Cancel, command options, repeat, edit the selection...
Wheel	Zoom centered on the cursor
Drag with the middle button	Pan: moves the view
Double-click the middle button	Zoom extents: the whole drawing on screen
Click the blue options of the prompt	Chooses that option

In a layout, double-clicking inside a viewport enters it, and double-clicking outside the viewports returns to paper.

Notes

Command options are chosen by typing their capital letters (C for Close, U for Undo), as in AutoCAD; in Spanish the letters may be different.
The clipboard keys (Ctrl+C, Ctrl+X, Ctrl+V) only act when the command line is empty; if another text box has the keyboard focus, they copy and paste text.
With CUI you can add your own shortcuts (Ctrl, Alt or a function key plus a key) for any command; your own shortcut wins over a built-in one with the same keys. Aliases are changed with ALIASEDIT.