There is an option to comment on a range of lines in file on github, see How to refer to a specific line or range of lines in github?
But is there similar option to comment on range of lines inside pull request?
When I click on line, only single line is highlighted yellow and R### (e.g. R446) is appended to url, clicking another line with shift pressed doesn't do anything. I tried to change url to R446-450 but it didn't do anything. Changing it to #L450-458 also didn't do anything. Also even that single highlighted line doesn't seem to affect anything.
Clicking blue plus that appears on hover creates comment window, but it only commenting on a single line.
Commenting on single line results in this
Comment on pull-request page shows only 4 lines above selected/commented line, but I'm interested in showing 7 lines, not 4