I thank you for your reply. I should have answered my own post earlier: I came to understand OruxMaps was not routable but a viewer only. The manual, oruxmapsmanual_en.pdf, confuses, however. 'Search A route between two points' on page 21 describes how to create a route but makes no mention of the necessity for an accompanying application such as BRouter. I was informed about BRouter but was unable to make use of it. I struggled with the address path in my Motorola Moto G where the internal storage path is 'storage/emulated/0'. This is where OruxMaps resides and where I downloaded the BRouter app and its routable map. It informed me it could not find particular .cd5 or .rd5 files. I accepted defeat after hours of trying, unfortunately.
I feel that MapQuest not working as an online router should be addressed, too, either to withdraw the option or make clear somewhere this is the case.
Please allow me to emphasise these are constructive criticisms; I am in awe of OruxMaps that, in conjunction with OpenAndroMaps, has allowed me to move seamlessly to my smartphone from my beloved Garmin eTrex Legend while continuing to use OpenStreetMap.
Bob