Hope they are OK with this... if not let me know, please.
Summed the parts provided by wgoeo (reply #3) and tv84 (reply #47), and made a "soup" for my 2074E, since I was interested in the Spectrum Analyzer (SA) option.
The "soup" was named lis2.txt, and should be renamed to lis2.html
The SA option was installed with the latest firmware gds2000e_v1.38 (2019-01-26) on the scope.
As rhb explained "To access the SA you need to press the button in the lower right corner of the screen area below the small round button.", the OPTION button. Now I have a use for him.
Hope everything is alright, but it worked for me, as can be seen from the print screens attached.
Thanks for your work
PS: Sorry rhb I had to press AWG button. My scope didn't crash... until I go further, playing with Generators menus that the scope doesn't have.