The Instruction operation "append" is a string processing operation that concatenates the data from all the input elements. Append is useful operation for providing a fast way of concatenating multiple inputs. The inputs are concatenated first to last.
The example below shows three strings concatenated. So first [hello], then [there] and then [world]
<instruction operation="append">
<input>[hello]</c:input>
<input>[there]</c:input>
<input>[world]</c:input>
</instruction>[hello][there][world]
The example below shows three strings appended to a store, "htw" contains "[hello][there][world]
<instruction operation="append">
<output space="store" value="htw" /> <!-- this is the destination -->
<input>[hello]</c:input>
<input>[there]</c:input>
<input>[world]</c:input>
</instruction>(store "htw" contains "[hello][there][world]")
The example below appends the three strings to a store, but this time using the "sql" operation to select each element as their first word, this word is then passed to a field with the first letter as the value, the result is the same as in the example 1 above.
<iteration operation="sql">
<control value="select '[hello]' as h,'[there]' as t, '[world]' as w">
<body>
<instruction operation="append">
<input space="field" value="h" />
<input space="field" value="t" />
<input space="field" value="w" />
</instruction>
</body>
</iteration>[hello][there][world]