Example

This markup creates a numbered example that includes a cross-reference to the third line.

<ex number>
 Enter Daily Account Total
 Run Invoice Summary Report
 Go to Monthly Ledger <lineno id=ledger>
 Run Daily Update
 <\ex>
 .
 .
 .
 To run closing reports, return to <xref ledger> and run the Past Due Accounts Report.

The line number where the ID is located is substituted for the <xref ledger> cross-reference. It produces this sentence:

To run closing reports, return to 3 and run the Past Due Accounts Report.

The end tag is not required for <lineno>.