Parameter studies updates (#25)

* Tutorial snippet updates

* Tutorial images and text changes

* Tutorial snippets in Getting started

* Tutorial snippets in Modeling the human body

* Created whole folders for snippet files

* Update tests

* Used cmd.exe to create lib in ci test

* Merge commit '118df158da292f4b7f185ff8d0172692779da1e9'

* Updates to tutorial Modeling the Human Body. New folder structure

* Final updates to the first 4 tutorials.

* Update file paths in lesson1.md

* rename1

* rename2

* Tutorial updates - file structure, images and more

* Update file path in lesson2.md

* Different updates to the first few tutorials

* Text and general structure updates to the first few tutorials

* Updates of code snippets, images and other stuff in A Study of Studies

* Mainly changes to Parameter Studies and Optimization Tutorial. Many files created due to Code Snippets.

* Update python dependencies

* A few language corrections

* Fixed backslashes

* Fixed more backslashes

* Fixed more isues with win/linux compat

---------

Co-authored-by: Jacob Hilmar Adamsen <jha@anybodytech.com>
Co-authored-by: Morten Enemark Lund <mel@anybodytech.com>

Author: 3 people

A_Getting_started/_static/lesson2/image2.png

@@ -3,10 +3,14 @@
 
 # Lesson 2: Controlling the Posture
 
-The Standing Model's posture is defined by the angles at the anatomical joints.
+The script editor currently shows the main file of the model, which includes the
+line of code `Main = {}`. Any basic AnyScript contains a main file that defines
+the model's structure and the operations to be performed on the model.
 
-These specifications have been collected in one of the model files, "Mannequin.any". Scroll
-down to the line which says `#include "Model\Mannequin.any"`.
+The `Mannequin.any` file, included in the main file, determines the posture of
+the Standing Model by specifying the angles at the anatomical joints.
+
+Scroll down to the line that says `#include "Model\Mannequin.any"`.
 
 ## Mannequin file structure
 
@@ -16,7 +20,7 @@ down to the line which says `#include "Model\Mannequin.any"`.
 :end-before: //# END SNIPPET 1
 ```
 
-**This line means that your model will include the "Mannequin.any" file located in the Model folder,
+**This line means that your model will include the content of the "Mannequin.any" file located in the Model folder,
 within the main file.**
 
 Double-clicking the file name in the editor window after loading
@@ -76,7 +80,11 @@ Simulation based analyses in AnyBody are termed "Studies".
 
 - **Kinematics**: Runs Kinematic analysis
 - **InverseDynamics**: Runs Inverse dynamic analysis
-- **InitialConditions**: Runs only the first time step of Kinematics. Useful for testing and debugging.
+
+To view all available operations in the model, click the "Open Operation Tree"
+button and navigate to "Main" > "Study". For example, the "InitialConditions"
+operation runs only the first time step of the kinematic analysis, which is
+useful for testing and debugging.
 
 ```{image} _static/lesson2/image2.png
 :alt: Operations drop down menu

A_Getting_started/lesson2.md

@@ -56,8 +56,8 @@ values. You will find the folder in the tree here:
 :align: center
 ```
 
-**Navigate to the "Right.Leg.JointReactionForce" folder
-by expanding the tree view like this**:
+**👉 Now** navigate to the "Right.Leg.JointReactionForce" folder
+by expanding the tree view like this:
 
 ```{image} _static/lesson3/image6.png
 :alt: Model tree forces