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7. The Magstep Menu

The Magstep menu controls the document magnification. The default magstep, zero, implies no magnification (i.e. the on-screen image should be the same size as the paper version). Positive magsteps increase the magnification by a factor of 1.2 at each step and negative magsteps decrease the magnification by a factor of 1.2 at each step. The factor of 1.2 is the same factor used by Ghostview (upon which mgv is based) and Ghostview borrowed the factor from TeX: if 1.2 is good enough for Donald Knuth, then it is certainly good enough for me.

The following entries are provided on the menu:

Decrease (Alt+-), Increase (Alt++)

Decrease or increase the magstep factor.

-5, -4, -3, -2, -1, Normal (Alt+0), +1, +2, +3, +4, +5

Set the magstep to the specified number; normal means zero magnification. The radio buttons are provided for convenient access to commonly used magsteps. If none of the radio buttons are toggled on, then you have a magstep outside their range.


This pops up a simple dialog which allows you to set a specific magstep value. The Set Magstep dialog can be made sticky.

The current magstep is displayed in, and can be changed from, the status line.

If the magstep is above +5 or below -5, then no radio button will be on but the status line will still show the correct value.

Warning: High magsteps can be pretty hard on your machine: caveat emptor. If you want to put an upper limit on the magstep, a simple modification to magstep.c:mgv_ui_magnify() is all that is needed (just don't make it less than 5 or you'll probably confuse the program).

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