Page Manager URL arguments
Node titles are not unique, so they cannot be used directly. You need to create page with nice, machine-readable, numerical ID, and then assign it it's own URL Alias. Works similar in Drupal from 5 to 8 as far as I know, menu names might be a bit different, that's all.

Pathauto is nice automation for aliases, but only on nodes. There was already similar, but not identical question with some answers.