MD> A. If we have an existing font, with existing ligature
MD> B. If we have an existing font, without existing ligature
MD> C. If we have a font with multiple levels of ligature glyph
As we consider cost of implementations, I wonder just how many
fonts there are in existence in each of these categories? I.e.
what's the cost impact on vendors and users in relation to
existing fonts of use of ZWL (or ZWNL) versus the cost of any
other alternative? I suspect the costs in relation to existing
fonts that Mark refers to is not very high (but feel free to
correct me if I'm wrong) on the assumption that the
technologies required to make smart-font ligation work (AAT and
OT) haven't been around that long and/or have been utilised by
only a very small number of applications.
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