zoom = 1.1

<div class="abc-source 16 1.1">
    EFGABcde
</div>

zoom = 1.0 (by default)

<div class="abc-source">
    fedcBAGF
</div>

<div id="score_1" class="abc-source"></div>
var score_1 = 'L:1/4\nQ:1/1=60\n\CDEFGABc';

zoom = 0.9

<div id="score_2" class="abc-source 14 0.9"></div>
var score_2 = 'CDEFGABc';

zoom = 0.8

<div id="score_3" class="abc-source">.8<div>
var score_3 = 'K:Cm\nCDEFGA=Bc';