In SR4A it says
QUOTE
Some abilities and implants (as noted) may increase this rating,
creating a modified skill rating. A modified skill cannot exceed the base skill rating x 1.5 (making 9 the maximum possible rating, or 10 with the Aptitude quality). Specializations, spells, and other implants may provide bonus dice to a skill, but do not change the base skill rating. These extra dice are listed in parentheses after the base skill, as in Spellcasting 4 (+2).
creating a modified skill rating. A modified skill cannot exceed the base skill rating x 1.5 (making 9 the maximum possible rating, or 10 with the Aptitude quality). Specializations, spells, and other implants may provide bonus dice to a skill, but do not change the base skill rating. These extra dice are listed in parentheses after the base skill, as in Spellcasting 4 (+2).
So is there an easy way to tell the difference between what adds to a skill and what is just bonus D?
Things that spring to mind are all the perception test addons, attention coprocessor, vision enchancement, adept enhanced perception…are these all additional D?
What about the MBW dodge bonus? The reflex recorders?
Thanks!