Whoops, I pasted the wrong example. Like I said, I'm good with GUI-based tools. I've never done anything serious with the command line. This is sort of a trial by fire.
So now my problem is the input path. I've tried every combination of .\ and ..\ that I can think of. I can't find the right combination to run the sample map provided in the OT. The map's path is C:\Program Files\dita-ot-3.6\docsrc\samples\sequence.ditamp. I set the PATH environment variable to C:\Program Files\dita-ot-3.6\bin.
How do I run this command? Running the suggested syntax gets me nowhere:
Error: Failed to run pipeline: [DOTA069F][FATAL] Input file 'file:/C:/Program%20Files/dita-ot-3.6/sequence.ditamap' cannot be located or read. Ensure that file was specified properly and that you have permission to access it.
Adding some combination of .\ and ..\ makes it worse.