Thank both of you for the detailed replies, the CTRL key info for zooming made my day

once I read it, but all of them were very useful info for me.

About using the scroll wheel for up and down scrolling of a page, I have to disagree

with you on that a bit: In my experience the scroll wheel of the mouse is used for

that is common in text editor, text viewers and internet browsers where the main

object is text. In graphics editor applications in my experience the scroll wheel is

used for zooming by default. I can only refer to applications that I am familiar with

and use frequently:

Corel Paintshop Pro - image editor
Google Sketchup - 3D engineering design tool
Autodesk AutoCAD - 3D engineering design tool

When you zoom in our out in these applications the focus or center of the zooming is

not the object in focus but the position of the mouse pointer. And I think it makes

perfect sense since when you're looking at a detailed image, you zoom in to a

specific spot that needs some detailed work, center of the aktive object would

require to click on an object first, but sometimes there is no object to center to,

for e.g. where two walls meet or don't meet especially if the reason of zooming in is

to find out whether the edges of the walls do meet or there is some tiny gap between

them.

About "Snap to": I mentioned 3 different "snap to" options in my first posting:

about the "grid" version, you might be right about when it comes to real life.

but when it comes to objects, I am not sure if it always works the way you described it: here is an example:

draw a wall vertically then another one horizontally, so you created a corner.
Place a cooker in the corner, it will nicely snap to the walls but when you place a fridge next to the cooker, the fridge will snap to the horizontal wall but it won't snap to the cooker, you can slide it left and right, it will never snap. It looks like an object will snap to a wall won't snap to another object.

About the selection color: Yes, on my laptop it is very dark, it is actually dark blue or blueish gray. I think it would be much better to leave the contour lines alone when you make an object aktive or focused and instead just change the filling color of the object dotted. Same filling color but small dots on it while it is aktive.

Since the snap to doesn't work, placing an object next to another is cumbersome because I cannot see the edges of the object clearly (at all) that I am dragging.

George