got another thing here for which I don't find the place in the manual, two places to look for it I think, didn't find it, glissando can be found in expressive marks of course, but this implementation might be found in fingering instructions too, but I didn't find it, or I missed it somewhere.
In attachment the image of what I want to achieve, it is used quite often in pieces for guitar, at least, I've seen it quite often.
glissando - fingering.jpg