Keyboard shortcuts in AutoCAD.
F3 to Enable or disable object snaps
F4 Switching the TABMODE system variable, which is responsible for using the Tablet mode»
F5 cycles through isometric planes
F6 Switching the UCSDETECT system variable that controls the data collection state of the dynamic UCS: active or not
F7 Toggles the GRIDMODE system variable to indicate whether the grid is enabled or disabled
F8 switching the ORTHOMODA system variable, controls the cursor movement in the perpendicular direction
F9 Toggle SNAP MODE the system variable that enables or disables the snap mode
F10 enable / disable polar tracking
F11 Enable/disable the tracking mode object snap
F12 enable / disable dynamic input
CTRL+0 turn clean screen mode on or off
CTRL+1 Enable or disable the Properties palette»
CTRL+2-Enable/disable the control center
CTRL+3 Open / close the tool palettes window
CTRL+4 Enable / disable sheet set Manager
CTRL+5 to turn on/off the information palette
CTRL+6 Enable / disable database connection Manager
CTRL+7 Enable / disable the markup set Manager
CTRL+8 Enable / disable the Quickcalc calculator palette
CTRL+9 enable / disable command window
CTRL+A Select all objects in the drawing
CTRL+SHIFT+A Enable/disable groups
CTRL+B Enable/disable snap
CTRL+C Copy objects to the clipboard
CTRL+SHIFT+C Copy objects to the clipboard with the base point
CTRL+D Enable/disable dynamic UCS
CTRL+E cycles through isometric planes
CTRL+F Toggles the current object snap modes
CTRL+G turn grid on and off
CTRL+J to Re-execute the last command
SHIFT+A Enable or disable object snapping
SHIFT+C Cancel object snap: center
SHIFT+D Disable snapping and tracking
SHIFT+E cancel object snap: endpoint
SHIFT+L Disable snapping and tracking
SHIFT+M cancel object snap: midpoint
SHIFT+P cancel object snap: endpoint
SHIFT+Q Enable/disable the tracking mode object snap
SHIFT+S enable the use of object snaps
SHIFT+V cancel object snap: midpoint
SHIFT+X Enable/disable polar tracking
SHIFT+Z Toggles the UCSDETECT system variable that controls the state of dynamic UCS data collection: active or not