diff --git a/docs/Public/Software/Operating Systems/Bash cheat sheet.md b/docs/Public/Software/Operating Systems/Bash cheat sheet.md
index 482e7737c..6c32c4b24 100644
--- a/docs/Public/Software/Operating Systems/Bash cheat sheet.md	
+++ b/docs/Public/Software/Operating Systems/Bash cheat sheet.md	
@@ -109,4 +109,9 @@ fi
 ```
 - `$?` stores the exit code for the last command
 
-[^1]: https://www.cyberciti.biz/faq/grep-in-bash/
\ No newline at end of file
+[^1]: https://www.cyberciti.biz/faq/grep-in-bash/
+
+```shell
+p10k configure
+```
+- Configure `powerlevel10k` looks
\ No newline at end of file
diff --git a/docs/Public/Software/Theory/concurrent programming.md b/docs/Public/Software/Theory/concurrent programming.md
new file mode 100644
index 000000000..f96932f20
--- /dev/null
+++ b/docs/Public/Software/Theory/concurrent programming.md	
@@ -0,0 +1,3 @@
+*Concurrent programming* is a paradigm where tasks are executed simultaneously. 
+
+Examples include Go, Rust, Erlang
\ No newline at end of file
diff --git a/docs/Public/Software/Theory/functional programming.md b/docs/Public/Software/Theory/functional programming.md
new file mode 100644
index 000000000..32f98922b
--- /dev/null
+++ b/docs/Public/Software/Theory/functional programming.md	
@@ -0,0 +1,3 @@
+*Functional programming* is a paradigm which consists of the composition of functions ([[pure function]]). It can evaluate mathematical functions. 
+
+Examples include Lisp, 
\ No newline at end of file
diff --git a/docs/Public/Software/Theory/immutable.md b/docs/Public/Software/Theory/immutable.md
new file mode 100644
index 000000000..071b76e14
--- /dev/null
+++ b/docs/Public/Software/Theory/immutable.md
@@ -0,0 +1,5 @@
+*Immutable* refers to the state of an object - specifically, that it cannot be modified after creation. [^1]
+
+This is in contrast to *mutable* objects, where they can be modified after creation. 
+
+[^1]: https://www.tiny.cloud/blog/mutable-vs-immutable-javascript/
\ No newline at end of file
diff --git a/docs/Public/Software/Theory/imperative programming.md b/docs/Public/Software/Theory/imperative programming.md
new file mode 100644
index 000000000..fa7cb5262
--- /dev/null
+++ b/docs/Public/Software/Theory/imperative programming.md	
@@ -0,0 +1,3 @@
+*Imperative programming* is a paradigm that follows a sequence of commands, which updates the state of a program. 
+
+Examples include C, C++, Go, Cobol, Fortran, Java. 
\ No newline at end of file
diff --git a/docs/Public/Software/Theory/pure function.md b/docs/Public/Software/Theory/pure function.md
new file mode 100644
index 000000000..b9f714b76
--- /dev/null
+++ b/docs/Public/Software/Theory/pure function.md	
@@ -0,0 +1,4 @@
+A *pure function* in [[programming]] is a [[function]] with the following properties:
+
+1. A *pure function* always produce the same outputs for the same inputs
+2. A *pure function* is [[immutable]] i.e. it will not affect any arguments or variables outside its scope
\ No newline at end of file
diff --git a/docs/Public/Software/Tools/Productivity/MacOS cheat sheet.md b/docs/Public/Software/Tools/Productivity/MacOS cheat sheet.md
index 94da0221d..69147fa5f 100644
--- a/docs/Public/Software/Tools/Productivity/MacOS cheat sheet.md	
+++ b/docs/Public/Software/Tools/Productivity/MacOS cheat sheet.md	
@@ -4,4 +4,6 @@
 
 `shift` + `cmd` + q`:` Quit all applications
 
-`cmd` + `shift` + `g`: Search for path in Finder
\ No newline at end of file
+`cmd` + `shift` + `g`: Search for path in Finder
+
+`cmd` + `m`: Minimize window
\ No newline at end of file