An adverbial clause modifier is a clause which modifies a verb or other predicate (adjective, etc.), as a modifier, not as a core complement. This includes things such as a temporal clause, consequence, conditional clause, purpose clause, etc. The dependent must be clausal (otherwise it is an advmod) and the dependent is the main predicate of the clause (a verbal predicate or a noun if the verb is omitted).
# visual-style 2 bgColor:blue
# visual-style 2 fgColor:white
# visual-style 11 bgColor:blue
# visual-style 11 fgColor:white
# visual-style 11 2 advcl color:blue
1 Se se SCONJ CS _ 2 mark _ _
2 pensi pensare VERB V Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin 11 advcl _ _
3 a a ADP E _ 5 case _ _
4 queste questo DET DD Gender=Fem|Number=Plur|PronType=Dem 5 det _ _
5 cose cosa NOUN S Gender=Fem|Number=Plur 2 nmod _ SpaceAfter=No
6 , , PUNCT FF _ 2 punct _ _
7 se se SCONJ CS _ 9 mark _ _
8 ci ci PRON PC Number=Plur|Person=1|PronType=Clit 9 expl _ _
9 rifletti riflettere VERB V Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin 11 advcl _ _
10 su su ADV B _ 9 advmod _ _
11 finisci finire VERB V Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin 0 root _ _
12 per per ADP E _ 13 mark _ _
13 sbagliare sbagliare VERB V VerbForm=Inf 11 advcl _ SpaceAfter=No
14 . . PUNCT FS _ 11 punct _ _
# visual-style 9 bgColor:blue
# visual-style 9 fgColor:white
# visual-style 7 bgColor:blue
# visual-style 7 fgColor:white
# visual-style 7 9 advcl color:blue
1 Ma ma CONJ CC _ 2 cc _ _
2 lui lui PRON PE Gender=Masc|Number=Sing|Person=3|PronType=Prs 7 nsubj _ SpaceAfter=No
3 , , PUNCT FF _ 2 punct _ _
4 dice dire VERB V Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 parataxis _ SpaceAfter=No
5 , , PUNCT FF _ 4 punct _ _
6 è essere VERB V Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 cop _ _
7 pronto pronto ADJ A Gender=Masc|Number=Sing 0 root _ _
8 a a ADP E _ 9 mark _ _
9 tendere tendere VERB V VerbForm=Inf 7 advcl _ _
10 la il DET RD Definite=Def|Gender=Fem|Number=Sing|PronType=Art 11 det _ _
11 mano mano NOUN S Gender=Fem|Number=Sing 9 dobj _ SpaceAfter=No
12 : : PUNCT FC _ 7 punct _ _
# visual-style 3 bgColor:blue
# visual-style 3 fgColor:white
# visual-style 1 bgColor:blue
# visual-style 1 fgColor:white
# visual-style 1 3 advcl color:blue
1 stillicidio stillicidio NOUN S Gender=Masc|Number=Sing 0 root _ _
2 [ [ PUNCT FB _ 3 punct _ SpaceAfter=No
3 v. vedere VERB V Mood=Imp|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin 1 advcl _ _
4 908 908 NUM N NumType=Card 3 dobj _ SpaceAfter=No
5 ] ] PUNCT FB _ 3 punct _ SpaceAfter=No
6 ) ) PUNCT FB _ 1 punct _ SpaceAfter=No
7 . . PUNCT FS _ 1 punct _ _