EB connects adverbs to forms of "be" before an object, adjective, or prepositional phrase:
+------------O-----------+ +-S-+--EB--+ | | | | | He is apparently a good programmerForms of "be" therefore have an optional "EB+", conjoined with O+ and B- (for objects), Pa+ (for adjectives), Pp+ (for prepositions), and other things. Note that "EB+" is not conjoined with Pg+ and Pv+; this is because present and passive participles have @E- connectors, so they can connect to adverbs using these.
Certain adverbs can also be used in comma modifiers, following the first comma:
+------MX-------+ | +----Xc-------+ | +--EB--+ +-----Xd-----+ | | | | | A man, apparently in a bad mood , was there A man in a bad mood was there *A man apparently in a bad mood was thereAs the third example shows, if an adverb is to be used in such situations, the modifying phrase must be surrounded by commas. For this reason, it is simplest to make the adverb attach directly to the preceding comma. (This is the only case where words attach to each other via a comma.) We then give commas "{@EB+} & Xc+". (See "X" for more on commas.)
Now the only problem is that while many adverbs that can follow "be" can also follow commas, some cannot: "He is really a good player", "*John, really a good player, beat everyone". Thus adverbs that cannot follow a comma are given "EBm-", and the comma is given "EBx+".
EB*m relates to comparatives; see "MV: Comparatives II".
The EBb link is used to link "but" with "not":
+-----Pa-------+-----AJra----+ | +--AJla-+--EBb-+--EA--+ | | | | | it tastes bitter.a but.j-a not.e sweet.a
The EBy link is used for contradictions and gain-saying:
+----------Ou---------+ | +------EBy------+ | | +--SJls--+--SJrs-+ | | | +-Xd-+ | | | | | | | I saw not.e Mary.b , but.j-n John.m
Regarding the kinds of adverbs that take EB+, see "E: Types of Adverb".