Getting along without a keyboard

I've recently set up an old Pi2 for use with a USB oscilloscope.
The scope software is point and click for the most part. Is there
some user interface trick to limp along using a mouse alone? Almost
no keyboard input is required, so it needn't be fast or easy.

An attempt to run raspi-config by copying the filename via the
file manager and pasting it into the "run command" dialog failed,
with neither error nor execution, though the "open" option did
start an editor. That was a surprise.

Thanks for reading and any suggestions. 

bob prohaska