Select all objects on active layers. Deactivated layers are ignored.

`Alt` + `A`

All hotkeys for gEDA (Linux)

ViewPort Global view of working area	`V`
ViewPort Centers view on cursor	`C`
ViewPort Zoom in	`Z`
ViewPort Zoom out	`Shift` + `Z`
ViewPort Toggles thin draw mode	`\|`
ViewPort Vertical flip	`Tab`
ViewPort Horizontal flip	`Shift` + `Tab`
ViewPort Exchange the roles of front and far side	`Ctrl` + `Shift` + `Tab`
Other Important Shortcuts Enter select mode (same as Space, or F11)	`Esc`
Other Important Shortcuts Terminate the current action, e.g. stop drawing tracks	`Esc`
Other Important Shortcuts Enter insert point mode. Click and drag on track to insert a point	`Insert`
Other Important Shortcuts Same as a click on the left mouse button	`Return`
Other Important Shortcuts Enter select mode (same as Esc, or F11)	`Space`
Other Important Shortcuts View: vertical flip	`Tab`
Other Important Shortcuts View: horizontal flip	`Shift` + `Tab`
Other Important Shortcuts View: exchange the roles of front side and far side	`Ctrl` + `Shift` + `Tab`
Other Important Shortcuts Delete object under the mouse cursor	`Del`
Other Important Shortcuts Delete object under the mouse cursor (fast)	`Ctrl` + `Shift L-Mouse`
Other Important Shortcuts Delete objects in selection	`Shift` + `Del`
Other Important Shortcuts Delete objects in selection	`Backspace`
Other Important Shortcuts Deletes connected copper under the cursor. Rats are considered a connection.	`Shift` + `Backspace`
Other Important Shortcuts Toggles thin draw mode	`\|`
Other Important Shortcuts Read the parameters to use for new objects from the object below the cursor.	`A`
Other Important Shortcuts Select all objects on active layers. Deactivated layers are ignored.	`Alt` + `A`
Other Important Shortcuts Clear selection	`Shift` + `Alt` + `A`
Other Important Shortcuts Flip object to the other side of the board	`B`
Other Important Shortcuts View: center display at cursor position	`C`
Other Important Shortcuts Copy selection to buffer and unselect	`Ctrl` + `C`
Other Important Shortcuts Display pin or pad name	`D`
Other Important Shortcuts Open pinout window for element under mouse cursor	`Shift` + `D`
Other Important Shortcuts Delete all rats	`E`
Other Important Shortcuts Delete selected rats	`Shift` + `E`
Other Important Shortcuts Highlight connections to object under mouse cursor. This includes rats and objects on invisible layers	`F`
Other Important Shortcuts Add connections to object under mouse cursor to the set of found objects	`Ctrl` + `F`
Other Important Shortcuts Un-highlight found connections	`Shift` + `F`
Other Important Shortcuts Increment grid by configured imperial increment	`G`
Other Important Shortcuts Decrement grid by configured imperial increment	`Shift` + `G`
Other Important Shortcuts Increment grid by configured metric increment	`Ctrl` + `G`
Other Important Shortcuts Decrement grid by configured metric increment	`Ctrl` + `Shift` + `G`
Other Important Shortcuts Toggle the visibility of the refdes or value attached to the component under the cursor	`H`
Other Important Shortcuts Toggle the visibility of the refdes or value attached to selected components	`Shift` + `H`
Other Important Shortcuts Toggle plating of a via. Used to produce non metalized mounting holes	`Ctrl` + `H`
Other Important Shortcuts Toggle the polygon clear flag of the line under the cursor	`J`
Other Important Shortcuts Toggle the polygon clear flag of selected lines	`Shift` + `J`
Other Important Shortcuts Increment clearance (soldermask to copper edge)	`K`
Other Important Shortcuts Decrement clearance (soldermask to copper edge (NOTE: can go negative!))	`Shift` + `K`
Other Important Shortcuts Increment clearance of selected objects (soldermask to copper edge)	`Ctrl` + `K`
Other Important Shortcuts Decrement clearance of selected objects (soldermask to copper edge)	`Shift` + `Ctrl` + `K`
Other Important Shortcuts Increment width of the line tool, adds to the settings of the current line style	`L`
Other Important Shortcuts Reduce the current linewidth	`Shift` + `L`
Other Important Shortcuts Move the object under the cursor to the current layer	`M`
Other Important Shortcuts Move selected objects to the current working layer (see pcb tip)	`Shift` + `M`
Other Important Shortcuts Set the origin to the current position of the mouse pointer	`Ctrl` + `M`
Other Important Shortcuts Show object refdes / pin number at mouse pointer	`N`
Other Important Shortcuts Select the shortest unselected rat on the board	`Shift` + `N`
Other Important Shortcuts Optimize and redraw all rats	`O`
Other Important Shortcuts Optimize and redraw selected nets only	`Shift` + `O`
Other Important Shortcuts Toggle the octagon flag of the object under the cursor	`Ctrl` + `O`
Other Important Shortcuts Connect the first point of a polygon with the last	`Shift` + `P`
Other Important Shortcuts Toggle square/round corners on pads	`Q`
Other Important Shortcuts Redo what was undone with undo	`Shift` + `R`
Other Important Shortcuts Show object report	`Ctrl` + `R`
Other Important Shortcuts Increment size of the object under the cursor	`S`
Other Important Shortcuts Decrement size of the object under the cursor	`Shift` + `S`
Other Important Shortcuts Increase the hole of the object under the cursor	`Alt` + `S`
Other Important Shortcuts Decrease the hole of the object under the cursor	`Alt` + `Shift` + `S`
Other Important Shortcuts Increase the hole of the object under the cursor	`Ctrl` + `S`
Other Important Shortcuts Decrease the hole size	`Ctrl` + `Shift` + `S`
Other Important Shortcuts Increase the size of new text by 10 mil	`T`
Other Important Shortcuts Decrease the size of new text by 10 mil	`Shift` + `T`
Other Important Shortcuts Global view of working area	`V`
Other Important Shortcuts Increase the diameter of new vias by 5 mil	`Shift` + `V`
Other Important Shortcuts Paste from buffer	`Ctrl` + `V`
Other Important Shortcuts Decrease the diameter of new vias by 5 mil	`Ctrl` + `Shift` + `V`
Other Important Shortcuts Increase the drill diameter of new vias by 5 mil	`Alt` + `V`
Other Important Shortcuts Decrease the drill diameter of new vias by 5 mil	`Shift` + `Alt` + `V`
Other Important Shortcuts Cut selection to buffer	`Ctrl` + `X`
Other Important Shortcuts View: zoom in	`Z`
Other Important Shortcuts View: zoom out	`Shift` + `Z`
Other Important Shortcuts Enter via tool	`F1`
Other Important Shortcuts Enter line tool	`F2`
Other Important Shortcuts Enter arc tool	`F3`
Other Important Shortcuts Enter text tool	`F4`
Other Important Shortcuts Enter rectangle tool	`F5`
Other Important Shortcuts Enter polygon tool	`F6`
Other Important Shortcuts Enter buffer mode	`F7`
Other Important Shortcuts Enter remove mode	`F8`
Other Important Shortcuts Enter rotate mode	`F9`
Other Important Shortcuts File menu	`F10`
Other Important Shortcuts Enter select mode (same as Space, or Esc)	`F11`
Other Important Shortcuts Enter lock mode	`F12`