For an EASA certified RJ100 the correction for steep approach based on a 35ft screen height is given in a table in the FCOM as a reduction of 125m dry runway or 145m wet
limitation section says between 4.5 and 6° for RJ70, 85 and 100
no tailwind for 100 but 5kts for 70 and 85
s.app switch light used to select mode indicates white when armed and green when active- GPWS mode 1 boundaries de-sensitised and cat 2/3 approach inhibited.
becomes active automatically when gear down and flap 33
allegedly
