As one of the posts here rightly says the use of left hand on the keyboard & the right one on the mouse. I take a little more sharp turn on this. Change your command aliases in such a way that you use only the keys on the left hand of the keyboard.

Zoom in & zoom previous are the commands which we require very frequently. I like to do it with very simple lisp. “zx” for zoom extents & “zs” for zoom previous. As I said earlier both of these command fit on the left side of the keyboard & are very easy to access. Here are the short lisps for your reference,
;FOR ZOOM EXTENTS
(defun c:zx()
(command “zoom” “E”))

;FOR ZOOM PREVIOUS;
(defun c:zs()
(command “zoom” “p”))

This command is the most favorite in my company. It prints in clicks. Complete the page setup & then just type “pp” & enter while in layout. No need of seeing that print dialog box again & again. Here is the lisp for your reference.
;THIS LISP IS FOR PLOTTING IN ONE CLICK- IN LAYOUTS ONLY
(defun c:pp()
(princ “Prints in one click,provided layout is set.
\n Made easy by Vivian Carvalho”)
(setvar “cmdecho” 0)
(command “plot” “n” “” “” “” “n” “n” “y”))

We all require to make zero fillets many a times. But the fillet command remembers the last radius we have input which is controlled by a system variable “filletrad”. To make zero fillets we need not change the radius every time. It is easily done by the use of shift key.
Simply activate the fillet command (by toolbar or the shortcut key) then press & hold down the shift key & select the lines you want to fillet. This overrides the “filletrad” variable, while still maintaining it after the command is over.

Offsetting an entity to the current layer.
When we invoke the offset command the following appears on the command line
“Specify offset distance or [Through/Erase/Layer] : “
On this instance type in “L”
The command line will say
“Enter layer option for offset objects [Current/Source] : “
On this instance type “c” & continue the command as usual. Now all the new entities will be drawn in the current layer.

Thanks for reading.