Recognize "print by chars" pattern

[yurydelendik]

Based on http://free-mon.wesleysteiner.com/FreemoNStandards.pdf, ITXT can generate the following text:

BT
/F1 14 Tf
1 0 0 1 108.78 711.92 Tm
(\))Tj
ET
BT
/F1 14 Tf
1 0 0 1 117.88 711.92 Tm
(U)Tj
ET
BT
/F1 14 Tf
1 0 0 1 124.84 711.92 Tm
(H)Tj
ET
BT
/F1 14 Tf
1 0 0 1 134.14 711.92 Tm
(H)Tj
ET
BT
/F1 14 Tf
1 0 0 1 143.44 711.92 Tm
1 0 0 1 143.44 711.92 Tm
ET
...

It can be packed to something more intelligent, e.g. set font once and print chars by line.

[timvandermeij]

Reopening this because this particular PDF is still slow when scrolling, although it got better with Yury's patch applied.

[timvandermeij]

It was just my browser being weird. This is fixed.