block Function

Groups more than one expression into a single expression. The value of the block function is the value of its last argument.

The <set> function does not return a value. If the last line in a block statement involves a set operation, the block statement will not return a value. If you want the block statement to return the value of a variable, use <ref>variable_name</ref> on the last line of the block statement.

Example

<block>
    <s>Hello there!</s>
    <add> <i>100</i> <i>2</i> </add>
    <i>42</i>
</block>

The block returns a value of 42, the value of its last argument.

For an example of using block with a trace statement, see Debugging and Testing Expressions.