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Dear Prof. Sharma,

   You may need to make adjustments for working with a 2-button mouse.
I do this on my laptop, where I don't have the choice of getting a
3-button mouse.  Generally speaking, X11 and magic should not be
confused by the combination of left- and right-mouse buttons used to
emulate the middle button.  The situation described in the tutorial,
however, requires that the left and right buttons be pressed
simultaneously, which will be interpreted incorrectly by a 2-button
mouse driver.  One solution is simply not to use that feature;
I have drawn magic VLSI layouts for ten years without using it.
The left-mouse button and right-mouse button will do everything that
you need to do.  The left+drag+right combination is a convenience
only.

   That being said, working on a 0.1um grid (which I'm doing more
often these days) can be frustrating, trying to get the cursor box
positioned exactly where I want it.  If anyone can think of a
"natural" way the left+drag+right feature can be implemented in a
2-button-mouse-independent way, I'll try to add it to the source
code.  One way would be to use (now that we have added X11-style
key macros) mouse-button + Keypad(1, 3, 7, or 9).  However, maybe
something simpler like mouse-button + Space or mouse-button + Shift
where each keypress rotates through the choice of corners to move,
would be slightly more intuitive.

   Meanwhile, the most I can do is to add a note to the tutorial
suggesting that the technique mentioned will not work with a 2-button
mouse.
						Regards,
						Tim

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