commit d0c5bc

2026-08-30 14:33:51 Ralph Thesen: Document DataTable CSV src and column0 options

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`examples/datatable.md` ..
@@ 65,3 65,41 @@
	\| 11 \| November \| 30 \|
	\| 12 \| December \| 31 \|
	}}
+
+	## Example: from a CSV attachment
+
+	A `src` pointing at a CSV attachment renders it as a datatable. This page has
+	`otters.csv` attached (delimiter `;`, with a header row, both defaults).
+
+	```
+	{{datatable
+	\|src=otters.csv
+	\|caption=Otters
+	}}
+	```
+
+	{{datatable
+	\|src=otters.csv
+	\|caption=Otters
+	}}
+
+	## Example: selecting columns with `column0`
+
+	`column0` picks which columns to show using 0-based indices, so `0,2` keeps the
+	first and third columns (Species and Habitat). It is the same as `columns`,
+	which counts from 1 instead. An absolute `src` reads the CSV from another page;
+	here it points back at this page's own attachment.
+
+	```
+	{{datatable
+	\|src=/Examples/DataTable/otters.csv
+	\|column0=0,2
+	\|caption=Species and habitat
+	}}
+	```
+
+	{{datatable
+	\|src=/Examples/DataTable/otters.csv
+	\|column0=0,2
+	\|caption=Species and habitat
+	}}