551 |
|
|
552 |
@item screen-gamma |
@item screen-gamma |
553 |
@cindex gamma correction |
@cindex gamma correction |
554 |
If this is a number, Emacs performs ``gamma correction'' on colors. The |
If this is a number, Emacs performs ``gamma correction'' which adjusts |
555 |
value should be the screen gamma of your display, a floating point |
the brightness of all colors. The value should be the screen gamma of |
556 |
number. Usual PC monitors have a screen gamma of 2.2, so the default is |
your display, a floating point number. |
557 |
to display for that gamma value. Specifying a smaller value results in |
|
558 |
darker colors, which is desirable for a monitor that tends to display |
Usual PC monitors have a screen gamma of 2.2, so color values in |
559 |
colors too light. A screen gamma value of 1.5 may give good results for |
Emacs, and in X windows generally, are calibrated to display properly |
560 |
LCD color displays. |
on a monitor with that gamma value. If you specify 2.2 for |
561 |
|
@code{screen-gamma}, that means no correction is needed. Other values |
562 |
|
request correction, designed to make the corrected colors appear on |
563 |
|
your screen they way they would have appeared without correction on an |
564 |
|
ordinary monitor with a gamma value of 2.2. |
565 |
|
|
566 |
|
If your monitor displays colors too light, you should specify a |
567 |
|
@code{screen-gamma} value smaller than 2.2. This requests correction |
568 |
|
that makes colors darker. A screen gamma value of 1.5 may give good |
569 |
|
results for LCD color displays. |
570 |
|
|
571 |
@item tool-bar-lines |
@item tool-bar-lines |
572 |
The number of lines to use for the toolbar. A value of @code{nil} means |
The number of lines to use for the toolbar. A value of @code{nil} means |