Passing the message on

Even if it's been fallen on deaf ears...

“When a designer in Ice­land is pick­ing a font to use for his design some of the desired fonts are impos­si­ble to use for the Ice­landic lan­guage. How come?
In addi­tion to the Eng­lish alpha­bet the Ice­landic lan­guage requires few spe­cial char­ac­ters. These accented and spe­cial char­ac­ters are:
á é í ó ú ý ð þ æ ö
Á É Í Ó Ú Ý Ð Þ Æ Ö
See this more detailed at Dia­crit­ics site.
Accented char­ac­ters are com­mon in scan­di­na­vian and east­ern Euro­pean lan­guages and are there­fore more likely to be included in the fonts. How ever we often real­ize that the Thorn, thorn, Eth and eth are missing.” Read on...

In any case, here is a question if anyone has an answer to. If the eth is modified from lowercase 'o', why does FontLab automatically insert numeral '9' to the default eth?