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improve README.SUSE and adding some links with more information

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OBS-URL: https://build.opensuse.org/package/show/Publishing/lyx?expand=0&rev=172
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Cor Blom 2019-07-04 21:02:58 +00:00 committed by Git OBS Bridge
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README.SUSE
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LyX makes use of ImageMagick, a.o. for showing previews of images in the LyX windows. In (open)SUSE some functionality of ImageMagick is disabled for security reasons. This is true for all postscripts files. Showing an eps image in LyX, therefore, does not work out of the box. A postscript file has some functionality of a program, so it is safer to have this functionality disabled. LyX makes use of ImageMagick, a.o. for showing previews of images in
the LyX windows. In openSUSE some functionality of ImageMagick is
disabled for security reasons. This is true for all postscripts
files. Showing an eps image in LyX, therefore, does not work out of
the box.
If you want to enable some disabled functionality, you can edit the
settings in /etc/ImageMagick-7, if you know what you are doing. An
alternative is to remove the package with the default SUSE setting
and install the upstream version: ImageMagick-config-7-SUSE must be
replaced by ImageMagick-config-7-upstream.
More information can be found in this announcement:
https://lists.opensuse.org/opensuse-security-announce/2019-05/msg00010.html
More information on ImageMagick security settings can be found here:
https://imagemagick.org/script/security-policy.php
If you want to enable some disabled functionality, you can edit the settings in /etc/ImageMagick-7, if you know what you are doing. An alternative is to remove the package with the default SUSE setting and install the upstream version: ImageMagick-config-7-SUSE must be replaced by ImageMagick-config-7-upstream.