Page "Blissymbols" Paragraph 39

However, at the end of 2009, the Blissymbolic script is still not encoded in the UCS.

Some questions are still unanswered, such as the inclusion in the BCI repertoire of some characters ( currently about 24 ) that are already encoded in the UCS ( like digits, punctuation signs, spaces and some markers ), but whose unification may cause problems due to the very strict graphical layouts required by the published Bliss reference guides.

In addition, the character metrics use a specific layout where the usual baseline is not used, and the ideographic em-square is not relevant for Bliss character designs, that use additional " earth line " and " sky line " to define the composition square.