Improve wording

Improve wording for intelligibility.

rust-intro.org

@@ -36,7 +36,7 @@
 
 *** Rust, the language
     - A bit more than 10 years old (2010)
-    - Memory safe without gcing, optional ref counting
+    - Memory safe without gcing, optional reference counting
     - Ownership, lifetimes, traits, functional paradigms
     - Variables are immutable by default and can be shadowed
     - Performance of idiomatic Rust is comparable to the performance
@@ -44,7 +44,7 @@
     - A well designed language and ecosystem
 
 ** Strengths and Weaknesses[fn:2]
-*** Things Rust does measurably really well
+*** Things Rust does measurably really well (Strengths)
     - Compiled code [[https://benchmarksgame-team.pages.debian.net/benchmarksgame/which-programs-are-fastest.html][about same performance as C / C++]], and excellent
       [[https://dl.acm.org/doi/10.1145/3136014.3136031][memory and energy efficiency]].
     - Can [[https://www.chromium.org/Home/chromium-security/memory-safety][avoid 70% of all safety issues]] present in C / C++, and most
@@ -55,10 +55,10 @@
       LLVM).[fn:3]
     - [[https://insights.stackoverflow.com/survey/2021#technology-most-loved-dreaded-and-wanted]["Most loved language"]] for 6 years in a row.
     - Modern tooling: ~cargo~ (builds just work), ~clippy~ (450+ code
-      quality lints), ~rustup~ (easy toolchain mgmt).
+      quality lints), ~rustup~ (easy toolchain management).
 
 ** Strengths and Weaknesses[fn:2]
-*** Points you might run into
+*** Points you might run into (Weaknesses)
     - Steep learning curve[fn:4] compiler enforcing (esp. memory)
       rules that would be "best practices" elsewhere.
     - Missing Rust-native libs in some domains, target platforms