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_docs/mod/csv.md

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+# CSV Module
+
+Functions for operating over CSV data.
+
+### each-record
+
+```
+csv:each-record FILE BLOCK
+```
+
+Opens the CSV file at FILE and calls BLOCK on each record. It is expected that this
+CSV file has a header which appears as the first row. This command will read and
+index the header, then start calling BLOCK from the row directly below the header.
+
+BLOCK is called with the arguments _|row header|_ where:
+
+- _row_ contains the fields of the current row as a list.
+- _header_ contains a hash mapping a header name to a field index.
+
+The return value will be nil.
+
+```
+csv:each-record "winds.csv" { |row hdr|
+  set name $row.($hdr.name)
+  set bearing $row.($hdr.bearing)
+  
+  echo "Wind $name has bearing $bearing"
+}
+```