As a home-worker I sit alone in the office, working on myThinkpad with ClientAccess-5250 emulation connected etc..
Today one of my collegues visited my office, and he connected his Portable, and to my surprise, he could see all the option-texts on IBM-commands.
This made us investigate my 5250-emulation setup, and it showed up that the coloring function in the emulation program was the cause. All text in the option-area had the same foreground- and background color. Changing this made all texts visible again.
How this change in settings has changed without me being involved, still puzzles me a bit.
Anyhow: My problem is now solved.