Re: irritating screen jumps in Mathematica 8.0.4

*To*: mathgroup at smc.vnet.net*Subject*: [mg125281] Re: irritating screen jumps in Mathematica 8.0.4*From*: Joseph Gwinn <joegwinn at comcast.net>*Date*: Sun, 4 Mar 2012 04:34:09 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <jit120$e7p$1@smc.vnet.net>

In article <jit120$e7p$1 at smc.vnet.net>, Dushan Mitrovich <dushanm at spinn.net> wrote: > Using Mathematica 8.0.4 under Mac OS X.6.8 I finally got irritated > enough by a certain behavior to ask here if there's any way to stop it. > > A lot of the typical notebook I work on involves word processing, with > only occasional Input/Output cells as needed. So most of the equations > are in separate lines and contained in math boxes (enclosed by Ctrl-( > and Ctrl-) ). > > If I edit something in one of those boxes, then hit either Up-arrow or > Down-arrow to get out of it and go to the previous or next line, the > cursor jumps to the front or back of the box and all the screen contents > jump _down_. So going into and out of a math box by repeating either > arrow key combination {Left, Down} or {Right, Up} will cause the screen > contents to keep jumping down until the box is at the bottom of the > screen. At that point the Left or Right arrow key causes the screen > contents to jump up so the box is inside the window, then the Down or Up > keys jumps it back to where it was. > > The jumps (of the screen contents, not of the cursor) almost guarantee > that I'll momentarily lose my place and have to re-find it. This is the > irritant, and I see no reason why it should exist. The cursor jumping > into and out of the box would be no problem, as it wouldn't destroy > one's focus. > > Have others run into this, and if so is there a way to prevent it? All the time, and not just in boxed cells. Jumps often happen in the gap when I look from screen to keyboard to type something in, causing a mistake. Undo often saves the day, but Undo is only one deep, so it's easily evaded. I have lost lots of text this way. Many of the jumps seem to be due to a slight twitch of the hand while looking away after positioning the cursor. The basic problem is that the UI is too twitchy. I don't have a solution, but wish I did. Joe Gwinn