Loading .epr file from panel - what relative path?

I want to render clips using a predefined preset. It works fine when using an absolute path (e:\path\preset.epr). But I want to include this epr file inside the panel directory.

Where should I put it? And how do I reference it properly?

I tried this: Added it to the jsx directory, and referenced it using the code below. Doesn't seem to work.

var encode = app.project.activeSequence.exportAsMediaDirect(localdir+app.project.activeSequence.name+"-0"+marker_index+".mp4", "./render.epr", app.encoder.ENCODE_IN_TO_OUT);