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INSTALLATION PROCESS (& BRIEF INTRODUCTION):
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(CAOS-lite, version 2026)

01-Unpack CAOS-install.zip somewhere on your account, the directory
   "CAOS-install/" is created, and it contains both a lite version of CAOS
   (within directory "CAOS-lite/") and the IDL Astronomy Library (within
   directory "astrolib/"). The lite version of CAOS contains itself both
   the CAOS PSE (Problem-Solving Environment - the IDL-based CAOS global
   architecture and interface) and a special lite edition of the CAOS
   Software Package (based on CAOS Software Package version 7.0), as well
   as a working directory, "work_caos/".

02-Go to the working directory "work_caos/" and fix the paths in the
   environment-parameters files "caos_env.sh" and "caos_startup.pro".

03-Still within the working directory, type "source caos_env.sh".

04-Launch IDL.

05-Type "@compile_all_CAOSlite_modules" in order to re-generate the
   default parameter files of the whole set of modules (upgrading so
   any possible pre-defined path).

06-Type "worksheet" at the CAOS prompt in order to use the CAOS
   Application Builder (the global interface of the tool).

NB-1: Steps 01,02,05 are necessary just once, during installation.
NB-2: Steps 03,04,06 are necessary for each opened terminal from which
      you wish to use IDL together with CAOS.


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SOME ADDITIONAL REMARKS:
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01-Refer to
      http://lagrange.oca.eu/caos
   for further informations on the CAOS PSE and its official packages.

02-Please never redistribute any CAOS part by yourself, rather refer to
   http://lagrange.oca.eu/caos.

03-New projects start within the worksheet with "File"->"New Project". Modules
   are put within the worksheet through button "Modules", and can be cloned
   or deleted using "Edit"->"Clone module" or "Edit"->"Delete item". Each color
   at the left- or right-side of a module represents a type of input or output.
   In order to link two modules, click on the output of the first one and then
   click on the input of the second one. When the design of your simulation is
   completed, including setting of the total number of iterations, save the
   project using "File"->"Save Project". Then you can set the parameters related
   to each module using its dedicated GUI called by clicking on the module at
   any moment. 

04-For a detailed tutorial refer to:
      http://lagrange.oca.eu/caos/tutorial/tutorial.html

05-In order to run a project, for example a project named "Anisoplanatism":
   > .rn ./Projects/Anisoplanatism/project.pro
   or alternatively use button "Run" from the CAOS PSE worksheet.


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Completed March 2026 - Marcel Carbillet