Regularise use of repeats, tune (A/B/C etc.) markers and final bar. 1. Only show tune markers when a tune change is in the middle of a line. 2. Only show repeat starts |: if the repeat start is in the middle of a line. 3. Final bar end mark must be a thick line. The official rules for a repeat are that if there is no left repeat marker |: then the repeat starts at the previous double bar.

X:1
T:Banks of the Dee, The
M:6/8
S:Bacon (Williams MSS)
A:Ascott-under-Wychwood
O:English
R:Jig
P:A.(AB)5
K:G
I:speed 300
P:A
|: G | "G" DEF GAB | "C" ced "G" cBA | "Em" BGE "D" Ddc | "G" BcA "D" G2  :|
P:B
|: G/2A/2 | "G" Bcd d2 g | "C" ede "G" dBG | Bcd "Em" efg |
   "G" GAG "D" FED | "C" cec "G" BdB  | "D" GFG "G" AFD |\
   GFE "D7" Ddc | BcA "G" G2  :|