No 13290, Saturday 03 Jul 2021, Arden

 Across

6 Old man crossing the line with nymph in the woods(5) DRYAD {D{RY}AD}
7 Number the entire book in the head without a drink(8) PAGINATE {P{A}{GIN}ATE}
10 Record of work on board, by say end of December(7) DOSSIER {DO}{SS}{IE}{decembeR}
11 Fashion finally becomes cross(7) ENRAGED {EN{RAGE}D} Finally=In the end
12 Food in the top layer, it’s off and extremely raw(7) CRUDEST {CRU{DiEt}ST}
13 Yahoo hasn’t left, that’s nice(7) PEASANT {PlEASANT}
14 Digital protection, rest falling out(6,5) FINGER STALL {REST+FALLING*}
19 Losing interest in undergarment for one is mad(7) BANANAS {BANiAN{A}S}? Anno not clear (Addendum - {BANiAN}{AS} - See comments)
21 Country in review, Spain ablaze(7) ALBANIA (T<=)
23 The bulk is loaded, without mass it cannot take off(7) OSTRICH {mOST}{RICH}

25 Support child with limited help(7) CHASSIS {CH}{ASSISt}
26 Ray is sick, is infected(8) BLIGHTED {B{LIGHT}ED} Sick = In bed
27 One clothed in extra material(5) MOIRE {MO{I}RE}

Down

1 Extremely hard, yes, said to be hard to get the pigment(8) DYESTUFF {harD}{YES}{~TOUGH=TUFF}
2 Harry aimed to get first rank, you must appreciate it(6) ADMIRE {AIMED*} around {Rank}
3 Rents going up, it’s not so much weak(10) SPIRITLESS {RIPS<=}{IT}{LESS}
4 Time to admit, you’ll be called fit(4) AGUE {AG{~YOU=U}E}
5 Perhaps mistaking ink mark?(6) STIGMA {INK+STIGMA*} = {MISTAKING}
6 Remove ends — did he send you music list?(6) DEDUCT (Acrostic)
8 Total bliss! Within hidden message, reveal odds(7) NIRVANA {NI{ReVeAl}NA}
9 Supplement — fuss over date and time(3,2) ADD TO {AD{D} {T}O}
13 One way to locate address in most letters — located correctly(6,4) POSTAL CODE {POSt}{LOCATED*}
15 Last Sovereign, one who ruled the city(7) NANKING {sovereigN}{AN}{KING}
16 Settles on the rim — effect of ground movement(8) LANDSLIP {LANDS}{LIP}
17 Monk, Rabbi — both disrobed(5) ABBOT {rABBi}{bOTh}
18 Well, going around bends is a problem(6) HASSLE {HA{SS}LE}
20 Bother to pay back, head the other way(6) NETTLE {(-s+N)ETTLE}
22 Creator of music and creator of the universe are different, finally(6) BRAHMS {BRAHM(-a+S)}
24 African told to keep quiet, essentially(4) HUTU {sHUT Up}

Reference List

The line=Ry, On board=SS, Say=I.e, Left=L, Interest=I, Mass=M, Child=Ch, One=I
Date=D, Time=T, One=An, Bends=SS

Colour/Font Scheme

Definition, Solution, Component letters, Embedded links, Theme word,  Reference list word, Anagram Indicator, C/C indicator, Reversal Indicator, Hidden word Indicator, Letter Pick indicator, Deletion Indicator, Homophone Indicator, Movement Indicator, Positional Indicator, Substitution, Indicator, Opposite indicator, Link/Connector, Extraneous