update texinfo manual + update .gitignore

Signed-off-by: Mattias Andrée <maandree@member.fsf.org>

1 files changed, 15 insertions, 5 deletions

diff --git a/doc/info/chap/overview.texinfo b/doc/info/chap/overview.texinfo
index fff14e9..32d191c 100644
--- a/doc/info/chap/overview.texinfo
+++ b/doc/info/chap/overview.texinfo
@@ -2,13 +2,23 @@
 @chapter Overview
 
 @command{unstickpixels} tries to unstick stuck pixels.
+It does this by rapidly switching between the colours
+sRGB(100 %, 0, 0), sRGB(0, 100 %, 0), and sRGB(0, 0, 100 %),
+which are displayed on the entire monitor. On all of the
+monitors. It helps to massage defective dots.
+
+Running this program for a number of hours, especially if
+combined with massaging defective dots, may heal defective
+dots. Dead dots (always black) are hard to revive, but stuck
+dots are more probable to get fixed.
 
 Dead (always black) pixels are hard to revive, stuck pixels
 on the other hand are more probable to get fixed.
 
-This program should be run under the Linux VT. It works by
-cycling the colour on the screen between sRGB(100 %, 0, 0),
-sRGB(0, 100 %, 0) and sRGB(0, 0, 100 %), as fast as possible.
-If you want to slow down the cycling you can add, as the only
-argument, the millisecond time sleep between the colours.
+@command{unstickpixels} uses the graphics cards' colour lookup
+tables to switch the colour displayed on the screen. If your
+computers does not supports this, the option @option{-v} may
+help, it will use the framebuffer indirectly, via the terminal.
+Unless @option{-v} is used, @command{unstickpixels} runs both
+in @command{X} and on the Linux VT.