| Name | Description | Type | Package | Framework |
| LoopStartVariableNodeFactory | Class | org.knime.base.node.flowvariable.variableloophead | KNIME | |
| LoopStartVariableNodeModel | Start of loop: pushes variables in input datatable columns onto stack, taking the values from one row per iteration. | Class | org.knime.base.node.flowvariable.variableloophead | KNIME |