It's for a leaflet that explains how Jacobs was an influence on the three creators featured - Patrick Dumas (Allan MacBride), me (Julius Chancer), and Eric Heuval (Le Mystère Du Temps) - all published, of course, by BD Must.
Jacobs really was the spark that set off The Rainbow Orchid, far more than Tintin. I bought a copy of La Marque Jaune at the Centre Belge de la Bande Dessinée in Brussels, sometime in the 1990s, and it opened up the horizon for me on the wider world of ligne claire and the possibility of more serious adventure in this format. (I just checked the dates - I went to Brussels in April 1996 and drew the first page of RO in March 1997.)
I certainly wouldn't claim to be an heir, but I'm very happy to be thought of in the same context!