Apply semantic line breaks

_episodes/00-setting-the-scene.md

@@ -13,116 +13,156 @@ objectives:
 keypoints:
 - "This lesson focuses on core, intermediate skills covering the whole software development life-cycle
 that will be of most use to anyone working collaboratively on code."
-- "For code development in teams - you need more than just the right tools and languages. You need a strategy 
+- "For code development in teams - you need more than just the right tools and languages. You need a strategy
 (best practices) for how you'll use these tools as a team."
-- "The lesson follows on from the novice Software Carpentry lesson, but this is not a prerequisite for 
-attending as long as you have some basic Python, command line and Git skills and you have been using them for a 
+- "The lesson follows on from the novice Software Carpentry lesson, but this is not a prerequisite for
+attending as long as you have some basic Python, command line and Git skills and you have been using them for a
 while to write code to help with your work."
 ---
 
 ## Introduction
-So, you have gained basic software development skills either by self-learning or attending, e.g., a [novice Software
-Carpentry course][swc-lessons]. You have been applying those skills for a while by writing code to help with your work
-and you feel comfortable developing code and troubleshooting problems. However, your software
-has now reached a point where there’s too much code to be kept in one script. Perhaps it's involving more
-researchers (developers) and users, and more collaborative development effort is needed to add new functionality
+So, you have gained basic software development skills either by self-learning or attending,
+e.g., a [novice Software Carpentry course][swc-lessons].
+You have been applying those skills for a while by writing code to help with your work
+and you feel comfortable developing code and troubleshooting problems.
+However, your software has now reached a point where there’s too much code to be kept in one script.
+Perhaps it's involving more researchers (developers) and users,
+and more collaborative development effort is needed to add new functionality
 while ensuring previous development efforts remain functional and maintainable.
 
-This course provides the next step in software development - it teaches some **intermediate software
-engineering skills and best practices** to help you restructure existing code and design more robust, 
-reusable and maintainable code, automate the process of testing and verifying software correctness and 
-support collaborations with others in a way that mimics a typical software development process 
-within a team. 
+This course provides the next step in software development -
+it teaches some **intermediate software engineering skills and best practices**
+to help you restructure existing code and design more robust,
+reusable and maintainable code,
+automate the process of testing and verifying software correctness
+and support collaborations with others in a way that
+mimics a typical software development process within a team.
 
 The course uses a number of different **software development tools and techniques**
-interchangeably as you would in a real life. We had to make some choices about
-topics and tools to teach here - based on established best practices, ease of tool installation for the audience, length of the course 
-and other considerations. Tools used here are not mandated though - alternatives exist and 
-we point some of them out along the way. 
-Over time, you will develop a preference for certain tools and programming languages based on your 
-personal taste or based on what is commonly used by your group, collaborators or community.
+interchangeably as you would in a real life.
+We had to make some choices about topics and tools to teach here,
+based on established best practices,
+ease of tool installation for the audience,
+length of the course and other considerations.
+Tools used here are not mandated though: 
+alternatives exist and we point some of them out along the way.
+Over time, you will develop a preference for certain tools and programming languages
+based on your personal taste
+or based on what is commonly used by your group, collaborators or community.
 However, the topics covered should give you a solid foundation for working on software development
-in a team and producing high quality software that is easier to develop and 
-and sustain in the future by yourself and others. Skills and tools taught here, while Python-specific, 
+in a team and producing high quality software that is easier to develop
+and sustain in the future by yourself and others.
+Skills and tools taught here, while Python-specific,
 are transferable to other similar tools and programming languages.
 
 The course is organised into the following sections:
 
 ![Course overview diagram](../fig/course-overview.png){: .image-with-shadow width="800px" }
 
 ### [Section 1: Setting up Software Environment](../10-section1-intro/index.html)
-In the first section we are going to set up our working environment and familiarise ourselves with various tools and techniques for
+In the first section we are going to set up our working environment
+and familiarise ourselves with various tools and techniques for
 software development in a typical collaborative code development cycle:
+
 - **Virtual environments** for **isolating a project** from other projects developed on the same machine
 - **Command line** for running code and interacting with the **command line tool Git** for
 - **Integrated Development Environment** for **code development, testing and debugging**,
   **Version control** and using code branches to develop new features in parallel,
-- **GitHub** (central and remote source code management platform supporting version control with Git) 
-for **code backup, sharing and collaborative development**, and
-- **Python code style guidelines** to make sure our code is 
-**documented, readable and consistently formatted**.
+- **GitHub** (central and remote source code management platform supporting version control with Git)
+  for **code backup, sharing and collaborative development**, and
+- **Python code style guidelines** to make sure our code is
+  **documented, readable and consistently formatted**.
 
 ### [Section 2: Verifying Software Correctness at Scale](../20-section2-intro/index.html)
-Once we know our way around different code development tools, techniques and conventions, in this section we learn:
+Once we know our way around different code development tools, techniques and conventions,
+in this section we learn:
+
 - how to set up a **test framework** and write tests to verify the behaviour of our code is correct, and
-- how to automate and scale testing with **Continuous Integration (CI)** using 
-**GitHub Actions** (a CI service available on GitHub).
- 
+- how to automate and scale testing with **Continuous Integration (CI)** using
+  **GitHub Actions** (a CI service available on GitHub).
+
 ### [Section 3: Software Development as a Process](../30-section3-intro/index.html)
-In this section, we step away from writing code for a bit to look at software from a higher level 
-as a process of development and its components:
+In this section, we step away from writing code for a bit
+to look at software from a higher level as a process of development and its components:
 
-- different types of **software requirements** and **designing and architecting software** to meet them, how these fit within the larger **software development process** and what we should consider when **testing** against particular types of requirements.
-- different **programming and software design paradigms**, each representing a slightly 
-different way of thinking about, structuring and **implementing** the code.
+- different types of **software requirements** and **designing and architecting software** to meet them,
+  how these fit within the larger **software development process**
+  and what we should consider when **testing** against particular types of requirements.
+- different **programming and software design paradigms**,
+  each representing a slightly different way of thinking about,
+  structuring
+  and **implementing** the code.
 
 ### [Section 4: Collaborative Software Development for Reuse](../40-section4-intro/index.html)
-Advancing from developing code as an individual, in this section you will start working with your fellow learners 
+Advancing from developing code as an individual,
+in this section you will start working with your fellow learners
 on a group project (as you would do when collaborating on a software project in a team), and learn:
 
-- how **code review** can help improve team software contributions, identify wider codebase issues, and increase codebase knowledge across a team.
-- what we can do to prepare our software for further development and reuse, by adopting best practices in **documenting**, **licencing**, **tracking issues**, **supporting** your software, and **packaging software** for release to others.
+- how **code review** can help improve team software contributions,
+  identify wider codebase issues, and increase codebase knowledge across a team.
+- what we can do to prepare our software for further development and reuse,
+  by adopting best practices in
+  **documenting**,
+  **licencing**,
+  **tracking issues**,
+  **supporting** your software,
+  and **packaging software** for release to others.
 
 ### [Section 5: Managing and Improving Software Over Its Lifetime](../50-section5-intro/index.html)
-Finally, we move beyond just software development to managing a collaborative software project and will look into: 
+Finally, we move beyond just software development to managing a collaborative software project and will look into:
 
-- internal **planning and prioritising tasks** for future development using agile techniques and effort estimation, management of **internal and external communication**, and **software improvement** through feedback.
-- how to adopt a critical mindset not just towards our own software project but also to 
-**assess other people's software to ensure it is suitable** for us to reuse, identify areas for improvement, and how to use GitHub to register good quality issues with a particular code repository.
+- internal **planning and prioritising tasks** for future development
+  using agile techniques and effort estimation,
+  management of **internal and external communication**,
+  and **software improvement** through feedback.
+- how to adopt a critical mindset not just towards our own software project
+  but also to **assess other people's software to ensure it is suitable** for us to reuse,
+  identify areas for improvement,
+  and how to use GitHub to register good quality issues with a particular code repository.
 
 ## Before We Start
 
 A few notes before we start.
 
 > ## Prerequisite Knowledge
-> This is an intermediate-level software development course intended for people who have already been developing code in
-> Python (or other languages) and applying it to their own problems
-> after gaining basic software development skills.
-> So, it is expected for you to have some prerequisite knowledge on the topics covered, as outlined at the [beginning of the lesson](../index.html#prerequisites).
-Check out this [quiz](../quiz/index.html) to help you test your prior knowledge and determine if this course is for you.
+> This is an intermediate-level software development course
+> intended for people who have already been developing code in Python (or other languages)
+> and applying it to their own problems after gaining basic software development skills.
+> So, it is expected for you to have some prerequisite knowledge on the topics covered,
+> as outlined at the [beginning of the lesson](../index.html#prerequisites).
+> Check out this [quiz](../quiz/index.html) to help you test your prior knowledge
+> and determine if this course is for you.
 {: .callout}
 
 > ## Setup, Common Issues & Fixes
 > Have you [setup and installed](../setup.html) all the tools and accounts required for this course?
-> Check the list of [common issues, fixes & tips](../common-issues/index.html) if you experience any problems
-running any of the tools you installed - your issue may be solved there.
+> Check the list of [common issues, fixes & tips](../common-issues/index.html)
+> if you experience any problems running any of the tools you installed -
+> your issue may be solved there.
 {: .callout}
 
 > ## Compulsory and Optional Exercises
-Exercises are a crucial part of this course and the narrative. They are used to reinforce the points taught and give
-you an opportunity to practice things on your own. Please do not be tempted to skip exercises as that will get your
-local software project out of sync with the course and break the narrative. Exercises that are clearly marked
-as "optional" can be skipped without breaking things but we advise you to go through them too, if time allows.
-All exercises contain solutions but, wherever possible, try and work out a solution on your own.
+> Exercises are a crucial part of this course and the narrative.
+> They are used to reinforce the points taught
+> and give you an opportunity to practice things on your own.
+> Please do not be tempted to skip exercises
+> as that will get your local software project out of sync with the course and break the narrative.
+> Exercises that are clearly marked as "optional" can be skipped without breaking things
+> but we advise you to go through them too, if time allows.
+> All exercises contain solutions but, wherever possible, try and work out a solution on your own.
 {: .callout}
 
 > ## Outdated Screenshots
-> Throughout this lesson we will make use and show content from Graphical User Interface (GUI) tools (PyCharm and GitHub).
+> Throughout this lesson we will make use and show content
+> from Graphical User Interface (GUI) tools (PyCharm and GitHub).
 > These are evolving tools and platforms, always adding new features and new visual elements.
-> Screenshots in the lesson may then become out-of-sync, refer to or show content that no longer exists or is different to
-> what you see on your machine. If during the lesson you find screenshots that no longer match what you see or have
-> a big discrepancy with what you see, please [open an issue]({{ site.github.repository_url }}/issues/new) describing what you see and how it differs from the lesson
-> content. Feel free to add as many screenshots as necessary to clarify the issue.
+> Screenshots in the lesson may then become out-of-sync,
+> refer to or show content that no longer exists or is different to what you see on your machine.
+> If during the lesson you find screenshots that no longer match what you see
+> or have a big discrepancy with what you see,
+> please [open an issue]({{ site.github.repository_url }}/issues/new) describing what you see
+> and how it differs from the lesson content.
+> Feel free to add as many screenshots as necessary to clarify the issue.
 {: .callout}
 
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