Changes in 905387b: update for libGL requirement

				workstation_setup.md
			
          @@ -1,12 +1,15 @@

           ## General

          -- You should use a network installation for workstations and servers if at all possible. NFS, SMB and AFP all work for sharing a single installation among multiple machines. The decreased admin overhead, bandwidth and disk savings of sharing a single installation is a significant benefit.

          +- There are significant benefits to installing software on a network filesystem, if available. NFS, SMB or AFP are all options for sharing a single software installation among multiple machines. Network installations have less administrative overhead, bandwidth and significant disk savings over a local installation.

          +

          +Local installations are an option using our Installation Manager. [Command line and GUI options are available.](client_downloads.md)

           ## Linux

          -Information on configuring 3D stereo can be found [here](stereo)

          +- libGLU is required for many structure visualization programs ( COOT, PyMOL, IMOD, Chimera, etc). This library is usually provided with the graphics card drivers, or in the

          +  absence of that using the linux mesa package. For the standard CentOS repositories, running `yum install mesa-libGLU` (and potentially `yum install mesa-libGLU-devel`) as should provide non-hardware accelerated versions of these libraries.

          -- All Linux machines need installations of a recent version (6.17+) of csh/tcsh. Red Hat Enterprise Linux 6 and other recent distributions usually have an up to date version.

          +- All Linux machines need installations of a recent version (6.17+) of csh/tcsh. Red Hat Enterprise Lisnux 6 and other recent distributions usually have an up to date version.

           - 64-bit machines need a number of 32-bit compatibility packages due to a number of legacy packages that are only available as 32-bit applications. Additional fonts for Tcl/Tk, Motif and Xview applications are also encouraged.

          @@ -22,9 +25,12 @@ In addition to the above, on RHEL8, CentOS8 and similar distributions, you will 

               yum install libnsl

           - gnome-terminal is required for [hkl2map](https://www.sbgrid.org/software/titles/hkl2map).

          +

           - The same 32-bit requirement applies for 64-bit Debian and Ubuntu machines. This is supported via the [Multiarch](https://wiki.debian.org/Multiarch/HOWTO) system. You'll need at least the following packages to run most of the software. Please email us if you discover we have left some out.

             `apt-get install libc6-i386 lsb tcsh gawk libjpeg62 curl libx11-6:i386 libxext6:i386`

          +Information on configuring 3D stereo can be found [here](stereo)

          +

           ## Mac OS X

           - - X11 is no longer included by Apple, and you'll need to install the latest Xquartz version offered on the [MacOSForge site](https://www.xquartz.org/) to run X11-based applications.

...	...	@@ -1,12 +1,15 @@
1	1	## General
2	2
3		-- You should use a network installation for workstations and servers if at all possible. NFS, SMB and AFP all work for sharing a single installation among multiple machines. The decreased admin overhead, bandwidth and disk savings of sharing a single installation is a significant benefit.
	3	+- There are significant benefits to installing software on a network filesystem, if available. NFS, SMB or AFP are all options for sharing a single software installation among multiple machines. Network installations have less administrative overhead, bandwidth and significant disk savings over a local installation.
	4	+
	5	+Local installations are an option using our Installation Manager. [Command line and GUI options are available.](client_downloads.md)
4	6
5	7	## Linux
6	8
7		-Information on configuring 3D stereo can be found [here](stereo)
	9	+- libGLU is required for many structure visualization programs ( COOT, PyMOL, IMOD, Chimera, etc). This library is usually provided with the graphics card drivers, or in the
	10	+ absence of that using the linux mesa package. For the standard CentOS repositories, running `yum install mesa-libGLU` (and potentially `yum install mesa-libGLU-devel`) as should provide non-hardware accelerated versions of these libraries.
8	11
9		-- All Linux machines need installations of a recent version (6.17+) of csh/tcsh. Red Hat Enterprise Linux 6 and other recent distributions usually have an up to date version.
	12	+- All Linux machines need installations of a recent version (6.17+) of csh/tcsh. Red Hat Enterprise Lisnux 6 and other recent distributions usually have an up to date version.
10	13
11	14	- 64-bit machines need a number of 32-bit compatibility packages due to a number of legacy packages that are only available as 32-bit applications. Additional fonts for Tcl/Tk, Motif and Xview applications are also encouraged.
12	15
...	...	@@ -22,9 +25,12 @@ In addition to the above, on RHEL8, CentOS8 and similar distributions, you will
22	25	yum install libnsl
23	26
24	27	- gnome-terminal is required for [hkl2map](https://www.sbgrid.org/software/titles/hkl2map).
	28	+
25	29	- The same 32-bit requirement applies for 64-bit Debian and Ubuntu machines. This is supported via the [Multiarch](https://wiki.debian.org/Multiarch/HOWTO) system. You'll need at least the following packages to run most of the software. Please email us if you discover we have left some out.
26	30	`apt-get install libc6-i386 lsb tcsh gawk libjpeg62 curl libx11-6:i386 libxext6:i386`
27	31
	32	+Information on configuring 3D stereo can be found [here](stereo)
	33	+
28	34	## Mac OS X
29	35
30	36	- - X11 is no longer included by Apple, and you'll need to install the latest Xquartz version offered on the [MacOSForge site](https://www.xquartz.org/) to run X11-based applications.