it's hard to read ubuntu help, I hope I can read help in gedit editor. is it possible to do the following ? man ls and open in gedit .
You could use this function to get something similar:
This means 1) create a temporary file and assign its name to the variable "file", 2) dump the contents of "man ls" into it, and 3) open it in gedit.
It could also be done with the gedit external tools plugin, but the above is probably as easy as anything.