The Markdown document you see will be used to generate a workflow invocation report. You can use Markdown with embedded commands for extracting and displaying parts of the workflow, its invocation metadata, its inputs and outputs, etc..
These commands do not take any arguments and do reference the whole workflow. For instance, the following example would display a representation of the workflow in the resulting report:
```galaxy workflow_display() ```
These commands reference a workflow step label and refer to job corresponding to that step. A current limitation is the report will break if these refer to a collection mapping step, these must identify a single job. For instance, the following example would show the job parameters the step labeled 'qc' was run with:
```galaxy job_parameters(step="qc") ```
It is also possible to reference a single job parameter
```galaxy job_parameters(step="qc", param="parameter_text") ```
These commands reference a workflow input or output by label. For instance, the following example would display the dataset collection corresponding to output "Merged BAM":
```galaxy history_dataset_collection_display(output="Merged Bam") ```