Commit 110408

2026-04-27 20:39:07 lisa: Context Diagram: rename 'Self-check' to 'Check Your Understanding' (house convention)

sd/C02/Context Diagram.md ..
@@ 127,9 127,9 @@
	---
-	## Self-check
+	## Check Your Understanding
-	Test yourself before moving on. Answer in your head first, then click the spoiler to check.
+	Answer in your head first, then click the spoiler to check.
	**1.** Which of these is **not** a component of a context diagram?
	*(a) process · (b) entity · (c) data flow · (d) data store*